Nokia Solutions and Networks RBTS2500 Non-Line of Site Wireless Data Link User Manual CBR BTS

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Configuring, Installing, and
Using Carrier Infrastructure
Broadband Wireless Access System
Part Number: 104-0100-0004
BaseConnect, Expedience, NetProvision, and ProvisionLink are trademarks of NextNet Wireless, Inc.
©2000-2004 NextNet Wireless, Inc. All rights reserved.
WARNING: This equipment has been tested with a 19 dBi gain antenna and found to comply with the FCC
guidelines for Radio Frequency Radiation Exposure Limits as detailed below. For a single base 5 watt
transmitter connected to the antenna, a minimum of 2 meters or 6.5 feet of separation between the antenna
and all persons must be maintained. The minimum separation increases when additional base transmitting
signals are combined and applied to the same antenna. Four base 5 watt transmitters combined to use a single
antenna need a minimum separation of 4 meters or 13 feet from all persons.
Radio Frequency Radiation Exposure Limits.
TABLE 1. Limits for Maximum Permissible Exposure (MPE)
Frequency range
(MHz)
Electric fieldstrength (V/m)
Magnetic fieldstrength (A/m)
Power density
(mW/cm 2)
Averaging time
(minutes)
(A) Limits for Occupational/Controlled Exposures
0.3-3.0
614
1.63
*(100)
3.0-30
1842/f
4.89/f
*(900/f2)
30-300
61.4
0.163
1.0
300-1500
—
—
f/300
1500-100,000
—
—
(B) Limits for General Population/Uncontrolled Exposure
0.3-1.34
614
1.63
*(100)
30
1.34-30
824/f
2.19/f
*(180/f2)
30
30-300
27.5
0.073
.2
30
300-1500
—
—
f/1500
30
1500-100,000
—
—
1.0
30
f = frequency in MHz
* = Plane-wave equivalent power density
NOTE 1 TO TABLE 1: Occupational/controlled limits apply in situations in which persons are exposed as a
consequence of their employment provided those persons are fully aware of the potential for exposure and can
exercise control over their exposure.
Limits for occupational/controlled exposure also apply in situations when an individual is transient through a
location where occupational/controlled limits apply provided he or she is made aware of the potential for
exposure.
NOTE 2 TO TABLE 1: General population/uncontrolled exposures apply in situations in which the general
public may be exposed, or in which persons that are exposed as a consequence of their employment may not
be fully aware of the potential for exposure or can not exercise control over their exposure.
Note: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio-frequency energy, and, if not installed and used in accordance with the installation
manual, may cause harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference, in which case users will be required to correct the interference at
their own expense.
ii
TABLE 2. Technical Information
Transmitting power
1m watts to 2 watts
1m watts to 5 watts (high power option)
Operating voltage
120 VAC nominal
Frequency band
2500 - 2686 MHz TX/RX
Frequency stability
±1.0 ppm
Number of channels
31
Channel bandwidth
6 MHz
Modulation
Orthogonal frequency division multiplex
Transmission
Time division duplex/time division multiplex
NextNet Wireless, Inc. recommends the following antennas for base station installations:
TABLE 3. Recommended antennas for base station installations
Manufacturer
Antenna type
Model/part number
Stella Doradus
120 degree vertical
polarization
26 12005V
18 dBi gain
Stella Doradus
90 degree vertical
polarization
26 9005V
19 dBi gain
Stella Doradus
90 degree vertical
polarization
26 9007.5NV
17 dBi gain
Stella Doradus
90 degree horizontal
polarization
Til-Tek
Omni vertical polarization
26 9005H
19 dBi gain
TA-2550
10 dBi gain
This Class A digital apparatus complies with Canadian ICES-003.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL
ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE
PRESENTED WITHOUT WARRENTY OF ANY KIND. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCT.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND
SOFTWARE ARE PROVIDED “AS IS” WITH ALL FAULTS. NEXTNET WIRELESS DISCLAIMS ALL
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR
ARISING FOM A COUSRE OF DEALING, USAGE, OR TRADE PRACTICE.
IN NO EVENT SHALL NEXTNET WIRELESS OR ITS SUPPLIERS BE LIABLE FOR ANY
INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT
LIMITATION, LOST PROFITS OR LOSS OF DAMAGE TO DATA ARISING OUT OF THE USE OR
INABILITY TO USE THIS MANUAL, EVEN IF NEXTNET WIRELESS HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
iii
iv
CONTENTS
About this guide
Preface overview .............................................................................. xiii
About this guide .............................................................................. xiii
Chapters in this guide ........................................................................................ xiv
Additional documentation ............................................................... xiv
Typographical conventions this guide uses ......................................xv
Where to go for more help ............................................................... xvi
Technical support............................................................................................... xvi
Documentation additions and corrections..................................................... xvi
Introduction to backhaul installations
Chapter overview .............................................................................. 1-1
System overview ................................................................................ 1-1
System overview ................................................................................................ 1-1
Infrastructure overview .................................................................................... 1-2
Installation overview .........................................................................1-4
Installation steps common to CBR and BTS ................................................ 1-4
Planning the installation ..................................................................1-6
Choosing an installation location .................................................................... 1-6
Assessing network access provider equipment needs ................................. 1-7
Planning for the antennas and antenna installation tips .............................. 1-8
Designing the deployment of base stations .................................................. 1-9
Configuring network architecture
Chapter overview ............................................................................ 2-11
Architecture overview ..................................................................... 2-11
Configuring switches ......................................................................2-12
Configuring the switch at the cell site .......................................................... 2-12
Configuring the head end switch .................................................................. 2-12
Configuring the ISP switch ............................................................................ 2-12
Selecting links and circuits .............................................................2-12
Selecting links based on maximum rate needed ......................................... 2-12
Selecting links based on another rate ........................................................... 2-13
Configuring the AP server
Chapter overview ............................................................................3-15
AP server overview ..........................................................................3-15
Starting the AP server .....................................................................3-15
Configuring the AP server ..............................................................3-16
Defining AP server users and administrators ............................................. 3-16
Defining zone names ...................................................................................... 3-21
Defining ISPs ................................................................................................... 3-22
Changing ISP information ............................................................................. 3-24
Monitoring ISPs and base stations ............................................................... 3-25
Configuring base stations
Chapter overview ............................................................................4-27
Before you begin .............................................................................4-27
Setting up connection methods used to configure base stations ..4-28
Setting up terminal emulation access ........................................................... 4-28
Setting up Telnet access ................................................................................. 4-28
Setting up web access ..................................................................................... 4-30
Setting up SNMP access ................................................................................ 4-31
Setting base station configuration parameters ...............................4-33
set airlink channel ........................................................................................... 4-33
set airlink downlink power ............................................................................. 4-34
set airlink downlink bias ................................................................................ 4-35
set system location .......................................................................................... 4-37
set system name ............................................................................................... 4-38
set airlink state ................................................................................................. 4-38
Recommended parameter changes ................................................4-38
set system cell .................................................................................................. 4-38
set system sector .............................................................................................. 4-38
set DHCP state ................................................................................................ 4-38
Setting legacy and management VLAN IDs ............................................... 4-39
Setting up Syslog ............................................................................4-39
Configuring the authority that grants network access to CPEs ....4-40
Using base station caching feature for re-registering CPEs ..................... 4-40
Remote authority: setting up the provisioning server to grant CPEs
network access ................................................................................................. 4-41
Local authority: setting up the base station to grant CPEs
network access ................................................................................................. 4-42
Configuring the time signal used by base stations ........................4-42
Configuring the GPS to supply the time signal .......................................... 4-42
Configuring a base station to supply a time signal ..................................... 4-43
Installing the base transceiver station (BTS)
Chapter overview ............................................................................5-45
Before you begin .............................................................................5-45
Cell wiring .......................................................................................5-46
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Base station connectors ..................................................................5-47
Ethernet (data) and power connector .......................................................... 5-48
TVS module connectors ................................................................................ 5-50
GPS connectors ............................................................................................... 5-51
Serial interface connector ............................................................................... 5-53
Antenna connector ......................................................................................... 5-53
Mounting the base station ..............................................................5-54
Mounting the base station to a wall .............................................................. 5-54
Mounting the base station to a tower .......................................................... 5-55
Mounting the base station to a 19 inch rack ............................................... 5-55
Connecting the antenna to the base station ...................................5-55
Antenna connection tips ................................................................................ 5-55
Connecting the antenna to the base station ................................................ 5-55
Connecting the GPS equipment to a base station .........................5-56
GPS equipment mounting tips ..................................................................... 5-56
Connecting the GPS unit to the base station ............................................. 5-56
Connecting to the backbone network ............................................5-57
Powering base stations ...................................................................5-57
Powering tips ................................................................................................... 5-57
Powering the base station .............................................................................. 5-58
Installing the cabinet-mounted base radio (CBR)
Chapter overview ............................................................................6-59
Before you begin .............................................................................6-59
Installation overview .......................................................................6-60
Installing the mounting bracket and attaching cabinet to the
19-inch rack .....................................................................................6-61
Attaching the switch and power supply to the rack .......................6-62
Installing the CBRs into the cabinet ..............................................6-62
Connecting CBRs to cell (cell wiring) ............................................6-63
Connecting power to the CBRs ......................................................6-65
Powering the base station .............................................................................. 6-65
Powering tips ................................................................................................... 6-67
Grounding the CBRs ......................................................................6-68
Turning on the CBR’s power .........................................................6-69
Base station connectors ..................................................................6-70
GPS connectors ............................................................................................... 6-70
Power supply cable connections ................................................................... 6-71
Diagnostic cable connections ........................................................................ 6-71
Fuses and Ethernet cable connections on cabinet ..................................... 6-72
Wiring alarms for CBRs .................................................................6-74
Connecting to the backbone network ............................................6-74
vii
Testing and managing the network
Chapter overview ............................................................................7-75
Testing the setup overview .............................................................7-75
Installing the ISP’s provisioning server ....................................................... 7-75
Testing the connection between the AP server and the
provisioning server .......................................................................................... 7-76
Ensuring CPE access to ISP VLAN ............................................................ 7-76
Network management overview .....................................................7-76
Fault isolation overview ................................................................................. 7-77
Performance management overview ............................................................ 7-78
Configuration management overview .......................................................... 7-78
Accounting feature overview ........................................................................ 7-78
GPS status codes
Appendix overview ........................................................................A-79
Supported frequency ranges
Appendix overview ........................................................................ B-81
MMDS frequency range ................................................................................ B-81
3.3 GHz frequency range .............................................................................. B-83
3.5 GHz frequency range .............................................................................. B-83
viii C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
FIGURES
About this guide
Introduction to backhaul installations
Cabinet-mounted base radio (CBR) ............................................................... 1-2
Cabinet mounted base radios inside cabinet ................................................. 1-3
Base station for indoor or outdoor installation ............................................ 1-3
Configuring network architecture
Configuring the AP server
AP server log in page ...................................................................................... 3-16
Access Provider Management page .............................................................. 3-17
Configure page ................................................................................................ 3-18
Administrators page ........................................................................................ 3-19
New User page ................................................................................................ 3-20
Base Station Attributes page .......................................................................... 3-21
ISP Management page .................................................................................... 3-22
Create new ISP page ....................................................................................... 3-23
ISP details page ................................................................................................ 3-24
Monitor ISPs- Base Stations page ................................................................ 3-25
Base Station Properties page ......................................................................... 3-26
Configuring base stations
Installing the base transceiver station (BTS)
Cell wiring diagram ......................................................................................... 5-46
Base station connectors .................................................................................. 5-47
Ethernet (data) and power connector .......................................................... 5-48
Ethernet (data) and power connector .......................................................... 5-48
TVS module connector: Base station connector ........................................ 5-50
TVS module connector: power/Ethernet connector ................................ 5-50
GPS connector ................................................................................................ 5-51
Serial interface connector ............................................................................... 5-53
Base station mounting template .................................................................... 5-54
Installing the cabinet-mounted base radio (CBR)
Cabinet mounting bracket ............................................................................. 6-61
Location of switch and power supply in rack ............................................. 6-62
Cell wiring diagram ......................................................................................... 6-64
Power connections on bottom of cabinet ................................................... 6-66
Grouding the CBRs ........................................................................................ 6-68
CBR LEDs ....................................................................................................... 6-69
Connector on the serial cable used in configuring base stations ............. 6-70
ix
Diagnostic cable: DB9 connector pins ........................................................ 6-72
Fuses and Ethernet cable connections on cabinet ..................................... 6-72
Removing fuse from cabinet ......................................................................... 6-73
External alarm connections ........................................................................... 6-74
Testing and managing the network
GPS status codes
Supported frequency ranges
x Configuring, Installing, and Using Carrier Infrastructure
TABLES
Chapters and appendices in the guide .............................................................xiv
Additional documentation ................................................................................xiv
Typographical conventions ...............................................................................xv
Contacting technical support ...........................................................................xvi
Introduction to backhaul installations
Advantages/disadvantages of location choices ............................................ 1-7
Configuring network architecture
Configuring the AP server
Create new ISP page ....................................................................................... 3-23
Configuring base stations
Transmit power levels ..................................................................................... 4-34
Transmit power levels ..................................................................................... 4-35
Downlink rate based on modulation method ............................................. 4-36
Uplink data rate for 4-QAM modulation method ..................................... 4-36
Uplink data rate for 16-QAM modulation method ................................... 4-36
Uplink data rate for 64-QAM modulation method ................................... 4-36
Uplink data rate for 16-QAM lite modulation method ............................. 4-37
Methods used to grant CPEs access to ISPs’ VLANs .............................. 4-40
Installing the base transceiver station (BTS)
Ethernet/power base station cable choices ................................................ 5-49
Ethernet/power cable pins ............................................................................ 5-49
Function of wires in cable 597-6027-0xxx .................................................. 5-49
Recommended mating connectors (optional) ............................................. 5-51
Installing the cabinet-mounted base radio (CBR)
Connector type to use with cabinet connectors ......................................... 6-66
Description of LEDs on the base station ................................................... 6-69
Power cable pins .............................................................................................. 6-71
Diagnostic cable pin connections (RJ-45) ................................................... 6-71
Testing and managing the network
GPS status codes
GPS status codes and meaning .................................................................... A-79
Supported frequency ranges
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P
R E F A C E
ABOUT THIS GUIDE
Preface overview
Thank you for choosing the Expedience™ system from NextNet Wireless. This guide
describes how to configure and install the system’s base transceiver station (BTS) and the
cabinet-mounted base radio (CBR)
This preface describes:
• Audience for this guide
• Additional documentation
• Typographical conventions used in this guide
• Where to go for more help
About this guide
This guide describes how to configure and install the system’s base station. It also describes
how to configure and work with the access provider (AP) server.
This guide is intended for network and system administrators who must install, configure, and
manage base stations and the AP server. This guide provides detailed configuration and
installation instructions.
It is assumed readers of this guide are familiar with:
• Basic networking concepts
• Layer 2 (link layer) of OSI model
• Cell structure engineering
xiii
Chapters in this guide
Table i describes the chapters and appendices in this guide.
Table i
Chapters and appendices in the guide
Chapter
Description
Preface
Provides an overview of the guide, related documentation,
the guide’s intended audience, typographical conventions,
and methods for obtaining technical support.
Provides an overview of the Expedience system and of the
system’s base station component. It provides an installation
overview and describes things you need to consider before
installing base stations.
Describes how to configure base stations, including how to
use Telnet or Term to set up a base station before deploying
it and mounting it to a tower or building. The chapter also
describes how to configure base stations after you have
deployed them, for example, to maintain the system and
optimize system performance.
Explains how to install a base station at a cell site. Also
describes the components used to mount the base station on
a building or tower.
Explains how to work with the ISP to ensure the network is
installed and running correctly.
Lists part numbers of system components that are related to
base station installations
Provides reference information about the frequency ranges
in which the equipment can operate.
Chapter 1 Introduction to
backhaul installations
Chapter 2 Configuring base
stations
Chapter 3 Installing base
stations
Chapter 4 Testing the
network setup
Appendix A Parts list
Appendix B Supported
frequency ranges
Additional documentation
If you cannot find the information you need in this guide, you may want to refer to the
documents described in Table ii.
Table ii
Additional documentation
Guide
Description
Provides an overview of the Expedience system, its
components, its network architecture, and options for
selecting a deployment scheme for the system in the service
provider (backbone) network.
Configuring, Installing, and This is the guide you are currently reading. Describes how to
Using Carrier Infrastructure set up and configure base stations, including how to connect
antenna systems, the backbone network equipment, and
global positioning system (GPS) equipment.
Also provides an overview of the AP server and how to
configure the AP server for your network.
Using the NextNet
Describes the NextNet operating system (NNOS), which is
Operating System (NNOS) the common operating system for the system’s base station
devices and customer premise equipment (CPE) devices.
This guide describes how you can configure the operating
system on devices by using commands issued from Telnet,
Terminal, or a Web interface.
Getting Started with the
Expedience System
xiv C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
Table ii
Additional documentation
Guide
Description
Configuring and monitoring Intended for use by an ISP. Provides an overview of the
the ISP network
Expedience system, its components, and its network
architecture. This guide describes how to install and
configure the ISP’s provisioning server. It describes how to
define service level agreements (SLAs) and how SLAs are
enforced by the NetEnforcer device.
Expedience Broadband
Intended for use by your subscribers, this guide describes
Wireless Access Modem
how to install a RSU (that is, an indoor CPE) at a subscriber
site. Your subscribers can completely install the RSU.
The guide explains, in detail, how to connect the RSU to a
computer or to a network device. It explains system prerequisites, and provides troubleshooting information.
This guide is available in electronic (pdf) format, on the
CD-ROM that accompanies the LinkMonitor software.
Installing the RSU
Intended for use by your subscribers, this guide describes
how to quickly install a RSU directly to a computer.
Expedience NLOS
Intended for use by a professional installer, this guide
Outdoor Broadband
describes how to install an outdoor CPE.
Wireless Access Modem
Typographical conventions this guide uses
Table iii describes the typographical conventions that this guide uses.
Table iii
Typographical conventions
Convention
Meaning
Bold face
If you are using a graphical user interface (GUI), bold face
indicates a button, menu option, icon, and so on, that you
manipulate directly.
If you are using a command line interface, bold face indicates
commands and keywords.
Bold face can also indicate information that you must enter.
Arguments for which you supply values are in italic face.
A command you type in, exactly as it appears, at a command
line.
Arguments that appear inside square brackets [ ], are
optional.
Also, when the guide shows a system prompt, the default
system prompt appears inside square brackets.
Required keywords are grouped in braces and separated by
vertical bars.
Notes contain helpful suggestions for the reader.
Non-printing characters, such as passwords, appear in angle
brackets.
Cautions contain information about which the reader must
exercise care.
Warnings contain information about how readers might do
something resulting in harm to themselves or in damage to
equipment or data.
Italic face
Courier
(mono-spaced) font
[ ... ]
{..} | {..}
Note
<...>
Caution
Warning
xv
Where to go for more help
This section describes how to obtain support for your NextNet Wireless product. It also
describes how to provide comments on the product documentation.
Technical support
NextNet Wireless is committed to providing our customers with high quality technical
support. Table iv describes how to contact technical support.
Table iv
Contacting technical support
Contact
Description
Phone
E-mail
Web site
1.877.962.2200
support@nextnetwireless.com
www.nextnetwireless.com
Documentation additions and corrections
If you find documentation errors, or want to see additional information not presented in this
guide, please contact our documentation group at the following e-mail address:
techdocs@nextnetwireless.com
xvi C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
C
H A P T E R
INTRODUCTION TO BACKHAUL
INSTALLATIONS
Chapter overview
This chapter provides an overview of the Expedience system and of the system’s
infrastructure components:
• The base station, which comes in two forms:
• The base transceiver station (BTS),
• The cabinet-mounted base radio (CBR)
• The access provider (AP) server
• The network switches
The chapter provides an installation overview. It also describes things you need to consider
before installing base stations.
System overview
This section provides a brief overview of the Expedience system, as well as the infrastructure
that network access providers must install. For additional system overview information, refer
to the guide “Getting Started with the Expedience System.”
System overview
NextNet Wireless designed the Expedience system to give small office, home office (SOHO),
and residential subscribers high speed, wireless access to network communication systems,
such as the Internet. The Expedience system is an end-to-end broadband wireless access
system and operates in several frequency ranges.
The system was designed to allow network access providers to re-sell network bandwidth to
ISPs on a wholesale basis. In turn, the ISPs sell access to their subscribers on a retail basis. To
support multiple ISPs on the network, the system uses virtual LAN (VLAN) technology.
The system does not have a line-of-sight (LOS) requirement between the base station and the
CPEs. The air link between base stations and CPEs functions as an Ethernet bridge carrying
IP/ARP packets. Time division duplex (TDD) and cellular deployment offer you flexibility in
adjusting downlink versus uplink airtime.
1-1
Infrastructure overview
The base station and AP server are network infrastructure components supplied by NextNet
Wireless. The network access provider configures and maintains this equipment.
Additional infrastructure components include switches for use at the base station cell sites,
and the head-end switch. These switches are supplied by the network access provider. If
desired, the network access provider can purchase the switches through NextNet Wireless.
Base station overview
The base station maintains contact with CPEs at your subscribers’ sites. The base station
integrates the transceiver and modem into one device.
Under typical configurations, the base station covers an approximate radius of 2 to 3 miles,
with a 5 mile maximum. If desired, network access providers can configure their base stations
to cover a maximum radius of 20 miles. To cover up to 20 miles, the network access provider
enables the extended range feature.
There are two types of base stations offered by NextNet Wireless:
• An indoor-only base station that slides into a base station cabinet after the cabinet has
been installed on a standard 19 inch rack. This base station is known as the cabinetmounted base radio (CBR).
• A base station that can be installed indoors or outdoors. This base station can be installed
on a tower, on a roof, on a wall, or on a rack. This base station is known as the base
transceiver station (BTS).
Figure 1.1 shows an individual CBR which will be installed inside a cabinet. This cabinet is
then installed on a standard 19 inch rack. Up to 8 CBRs can be installed inside a cabinet.
Figure 1.1 Cabinet-mounted base radio (CBR)
1-2 C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
Figure 1.2 shows 8 CBRs installed inside the base station cabinet.
Figure 1.2 Cabinet mounted base radios inside cabinet
Figure 1.3 shows a base station that can be installed outdoors or indoors.
Figure 1.3 Base station for indoor or outdoor installation
AP server overview
The AP server acts as a relay for the CPE registration events which arrive from base stations
(on the management VLAN) and are forwarded to the correct ISP provisioning server (over
the control VLAN).
The base stations each have a TCP/IP connection to the AP server. The base stations use
their connection to forward CPE registration requests to the AP server.
The AP server is provided by NextNet Wireless.
1-3
Head-end switch, base station cell switch, and ISP switch
overview
The network access provider must supply switches for their network, which include the headend switch and the switches used at the base station cell site. The network access provider
must also assist their ISPs when the ISPs program their switches with the proper ISP VLAN
IDs.
The base stations are grouped together into cells, with between 1 and 6 base stations at a cell
site. (If the network access provider chooses to stack base stations, more than 6 base stations
can exist in a cell.) To form the base station LAN, the base stations are connected to a switch
at the cell site.
WAN links are then used to connect the cell sites to the head end switch. The head end
switch splits incoming traffic to the management VLAN and to the appropriate ISP VLAN.
The ISP then has a configured switch that controls traffic coming into and out of the ISP
VLANs.
Installation overview
This section provides a high-level overview of how to install the indoor, cabinet-mounted
base radio (CBR), as well as the base transciever stations (BTS) that can be installed outdoors
or indoors.
Installation steps common to CBR and BTS
1 Plan the installation of base stations:
a Choose an appropriate location for the base station installation. For more information,
refer to the section “Choosing an installation location” on page 1-6 in this chapter.
b Design the deployment of base stations. Determine how base stations will be deployed
by marking a location on a map that shows where each base station will be installed.
Also determine naming conventions for cells, sectors, zones, and base stations names.
For more information, refer to the section, “Designing the deployment of base
stations” on page 1-9.
2 Plan for system components that you need to supply to complete the network. For more
information, refer to the section “Assessing network access provider equipment needs” on
page 1-7 in this chapter.
3 Install and configure the access provider (AP) server. For more information, refer to
Chapter 3, “Installing the AP server,” in this guide.
4 On the AP server, configure zone names, VLAN IDs, and the ISP IDs. For more
information, refer to Chapter 3, “Installing the AP server,” in this guide.
5 Using the NextNet Operating System (NNOS), configure the base stations before
deploying them in the field. For more information, refer to the chapter “Configuring base
stations” in this guide.
CBR installation overview
This section provides a high-level overview of how to install the base station cabinet onto a
19 inch rack, and then how to install the base stations into the cabinet.
1 Slide the metal base station cabinet into the 19 inch rack.
2 Install the power supply onto the 19 inch rack.
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3 Install the switch onto the 19 inch rack.
4 Slide each base station into the appropriate slot in the cabinet on the rack.
5 If you are using a 5 watt base station, install the 5 watt channel specific filter.
6 Plug in the cables which include:
• GPS cable
• Antenna cable
• Ethernet cables
• Power cables
• Alarm cables
Also, make sure that the fuses are installed properly.
7 Plug in the power cable to the CBRs in the cabinet, make sure the power supply is
working, then turn on each CBR.
BTS installation overview
This section provides a high-level overview of the base station installation process. Other
sections in this guide then explain these installation tasks in detail.
The tasks you perform to deploy base stations are:
1 Mount the base station at the site you selected. For more information, refer to the section
“Mounting the base station” on page 6-56 in this guide.
2 Connect the antenna to the base station, as described in the section “Connecting the
antenna to the base station” on page 6-57.
3 Mount the GPS device and connect it to the base station. One GPS device can service the
multiple base stations at a cell site. For more information, refer to the section “Connecting
the GPS equipment to a base station” on page 6-58 in this guide.
4 Connect the base station to the transcient voltage suppressor (TVS) module, then connect
the TVS module to your network switch.
The TVS module splits the connection: one connection goes to a switch that connects to
your network, and the other goes to a power supply. For more information, refer to the
section “Connecting to the backbone network” on page 6-59 in this guide.
5 Power the base stations by connecting the TVS module to the power supply. For more
information, refer to the section “Powering base stations” on page 6-59 in this guide.
6 Configure cell site switches, the head end switch, and the ISP switches. For more
information, refer to “Configuring switches” on page 2-10 in this guide.
7 Test the network by working with an ISP to:
• Install the ISP’s provisioning server
• Test the AP server to provisioning server connection.
• Test that CPEs can access the ISP’s VLAN(s).
1-5
Planning the installation
This section describes issues you need to consider before you install the base stations,
including:
• Choosing locations for the base station installation
• Planning for service provider equipment components
• Selection antennas
• Defining naming conventions for cells, sectors, and base stations and for VLANs
Choosing an installation location
The base station’s location at a site depends on many factors, including the site’s physical
environment, the coverage pattern you want to achieve, and the ease of maintenance you
require.
CBR installation location
The CBR is always installed indoors, inside the base station cabinet and on a standard 19 inch
rack. In turn, the rack is installed in an indoor equipment room or in another type of indoor
housing unit such as a shed near the tower.
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BTS installation location
Table 1.1 describes some of the locations you might want to consider for a BTS.
Table 1.1 Advantages/disadvantages of location choices
Location
Advantages
Disadvantages
On tower, at
antennas
Installing at the antennas offers
cost savings, due to the fact that
you can use a shorter coaxial cable
to connect the base stations to your
cells. This also offers the ability to
transmit at higher power levels,
since there is lower signal loss in
shorter cables.
Placing the base stations at the base
of a tower offers simpler
installation and maintenance than a
base station installed on the tower,
at the antennas.
Base station installation and
maintenance are simpler than other
options;
When you install base stations near
the top of the tower, installation and
maintenance are more difficult.
At base of
tower
On rooftop
You can use a shorter coaxial cable
to connect base stations to
antennas. As such, you can
probably operate at higher power
levels, and still stay within signal
loss criteria.
Rooftop access is usually available,
making installation and
maintenance easier. Also, a housing
unit for the backbone network
switch, power supplies, and other
equipment is typically available.
If you install at the base of the
tower, you need to run a coaxial
cable from the base stations to the
antennas. This cable must be of
sufficient size to reduce signal loss,
which may increase costs.
Installation still requires you to
install the antennas and coaxial
cable.
You need to obtain permission to
use a rooftop, and comply with
building codes.
Note: Regardless of the location you choose, plan to provide a weatherproof housing unit for
the network switch, the power supply, and the TVS equipment.
Placement of base stations and switches on network
Make sure your network design places the base stations behind a switch so that the base
station only sees Ethernet traffic addressed to it. The switch you choose needs to be able to
handle the Ethernet traffic on your network
Assessing network access provider equipment needs
Before you install and deploy the base station, ensure you have made provisions for the
following components:
• Power and data connection between the base station and your network
• Global position system (GPS) for proper TDD functions. You must use the GPS supplied
with the Expedience system.
• Antenna system for transmitting and receiving signals for the base stations.
1-7
• SNMP server
• DHCP server, if desired, to supply IP addresses to base stations
• AP server
• Weatherproof housing for the backbone network switch, power supplies, and UPS. Also
supply weatherproof housing for the TVS module, which provides lightning protection.
• Coaxial cable to connect the base station to the antenna.
• Tower or building structure on which to mount cell site equipment.
Equipment needs of ISP
As a network access provider, you provide network bandwidth to ISPs. The ISPs in turn sell
network access to subscribers. Make sure your ISPs plan for the following pieces of
equipment on the ISP VLAN:
• DHCP server
• Customer care server and a customer relationship management application
• Provisioning server
• NetEnforcer device to enforce service level agreements that are assigned to CPEs
• Switch to receive and direct traffic from the network access provider
• Router to route traffic to the Internet
Planning for the antennas and antenna installation tips
The type of antenna you choose depends on the cell type and pattern you want to use. Make
sure:
• The antenna is a high-gain antenna, preferably at least 18dBi or higher.
• The installation of the antenna complies with the vendor’s installation directions, and that
it meets building codes.
After you have installed an antenna, you need to connect it to a mounted base station. For
instructions on connecting the antenna to a base station, refer to the section “Connecting the
antenna to the base station” on page 6-57.
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Designing the deployment of base stations
To plan for how base stations will be deployed:
1 Determine a naming convention for base stations.
2 Using a map of the area to be covered, define the zone names that will be used.
For example, an access provider can divide a metropolitan areas into North, South, East,
West, and Central zones. The network access provider then assigns base stations to a
specific zone by using the set system location command. Keep in mind that multiple base
stations may be assigned to the same zone. Zones allow the ISPs to differentiate services to
subscribers by allowing subscribers to operate in specific regions or clusters of zones.
3 On a map, mark each location where base stations are installed.
4 For each base station, document your design choices. Please note that some parameters are
optional, depending on how you design the system.
• Base station name (required)
• Zone name (required)
• Cell name (optional)
• Sector name (optional)
• Channel (required)
• Default VLAN for legacy CPEs (optional, default is 1)
• Management VLAN ID (optional; default ID is 1)
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C
H A P T E R
CONFIGURING NETWORK ARCHITECTURE
Chapter overview
This chapter describes a simple network topology. It provides an overview of how to
configure switches at the cell site, the head end, and the ISP sites.
Architecture overview
The hierarchy of the network architecture uses the concept of two layers: the access layer and
the backbone layer.
The functions of the access layer include connecting users — which include subscribers and
the ISPs — to the backbone layer.
Subscribers use components on the access layer (the CPEs and the base stations) to obtain
broadband network services. The subscriber’s CPE communicates with a base station over a
radio link which is commonly called the air link. The base stations that communicate with the
CPEs are grouped into cells. The base stations in each cell are connected to a switch at the
cell site and a base station LAN is formed. The switches at the cell sites then use WAN links
to connect to the head-end switch.
The ISPs also use the access layer to connect to the backbone layer. An ISP receives network
access requests from components on the backbone layer (specifically the AP server on the
management VLAN). These requests for access are sent to the appropriate ISP. The ISP then
grants or denies the request. If access is granted, the ISP provides the subscriber’s host
computer with an IP address and traffic is shaped for that host computer according to the
subscriber’s service level agreement (SLA). Traffic to and from the host computer travels
through the backbone layer
The functions of the backbone layer include quickly switching incoming WAN trunk traffic
to the management VLAN and to the ISP VLANs. The backbone layer also returns Internet
traffic from the ISP to the appropriate base station and subscriber’s CPE.
2-11
Configuring switches
This section describes configuration of the following switches:
• Switch connecting base stations at the cell site
• Head end switch
• ISP switch
Configuring the switch at the cell site
At the cell site, the network access provider must program a port on the switch to be a WAN
trunk to the head end switch.
Configuring the head end switch
WAN trunk ports on the head end switch must be configured to accept traffic from the cell
sites.
The head end switch then splits the traffic to the Management VLAN and the ISP VLANs.
The network access provider configures edge ports on the head end switch with the
Management VLAN ID, and the IDs of all the ISP VLANs.
Configuring the ISP switch
The ISP switch must be configured with the IDs of VLANs provided to the ISP by the
network access provider. A port on the switch is also configured with the ID of the control
VLAN.
Selecting links and circuits
Network access providers must select the links or circuits that connect the cells to the
backbone network. Each cell may have one or more base stations, and each base station
serves a sector within a cell. Service providers typically deploy cells in four or six sectors.
Downlink and uplink capacities are:
• For downlink, the base station capacity ranges from 1.364 to 3.198 Mbps.
• For uplink, the capacity ranges from 1,249 to 198 Kbps.
Typically, you adjust the downlink air time to be some multiple of the bandwidth of the
uplink. This is because browsing requests from your subscribers will most likely be shorter
than responses. Therefore, as an example, you can configure a base station for a capacity of
3.030 Mbps downlink, and 296 Kbps uplink.
Some commonly used link types to backhaul cell traffic are DS-3 and point-to-point
microwave connections.
Selecting links based on maximum rate needed
You can choose a link based on the maximum bit-transfer rate you might need. For example,
you might use DS-3 circuits to connect cells to a switch, and then connect those switches
together, using the appropriate higher-rate links.
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Selecting links based on another rate
You might want to choose a link providing another data transfer rate. The link you choose
might depend on the expected and actual traffic rates for a given cell.
Choosing this option means you get lower cost circuits, but you also might get lower
throughput, increased response time, and so on.
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H A P T E R
CONFIGURING THE AP SERVER
CHAPTER3
Chapter overview
This chapter describes how to configure and use the access provider (AP) server.
AP server overview
All base stations connect to the AP server using a TCP/IP session. Using this connection, the
base stations transfer incoming registration requests from CPEs to the AP server. The AP
server forwards the request to the proper provisioning server for authorization.
The AP server defines the zones and ISPs that comprise network access provider’s network.
Note the following about the AP server:
• The connection between the AP server and the provisioning server is always established
from the AP server to the server. Network access providers or ISPs cannot use the
provisioning server to define or attempt a connection back to the AP server.
• The AP server does NOT accept CPE registrations from base stations that do not have a
zone setting that the AP server can recognize.
Starting the AP server
The AP server was designed to use a Java servlet called Tomcat.
1 To run the Tomcat server, type the following at a command prompt:
net start tomcat
2 To stop the Tomcat server: type the following at a command prompt:
net stop tomcat
3 To verify that the server is installed correctly, open an Internet browser. In the browser’s
address field, type the following address:
http://localhost:8080/ap
3-15
Configuring the AP server
To configure the AP server, you must define AP server users, configure zone names, VLAN
IDs, ISP names, and ISP IDs.
Defining AP server users and administrators
To define users and administrators of the AP server:
1 Open a web browser. In the browser’s address field, type the address of the AP server.
A log in page appears.
Figure 3.1 AP server log in page
4.0.0
If you are logging into the server for the first time, log in with the following defaults:
• User name: administrator
• Password: password
If you are logging in for the second or subsequent time, enter your user name and
password in the appropriate fields.
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The Access Provider Management page opens.
Figure 3.2 Access Provider Management page
4.0.0
MK
3-17
2 From the Access Provider Management page, click the Configure link. The Configure
page opens.
Figure 3.3 Configure page
4.0.0
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MK
3 From the Configure page, click Administrators.The Administrators page opens.
Figure 3.4 Administrators page
4.0.0
MK
Norman
Tyra
Jen
Juan
4 In the Changes on this page require your password here: field, type your password.
3-19
5 Click Create New User. The New User page opens.
Figure 3.5 New User page
4.0.0
MK
6 In the Changes on this page require your password here: field, type your password.
7 Complete the fields on the page, then click Save Changes.
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Defining zone names
To define zone names:
1 From the AP server’s home page, click Configure.
2 From the Configure page, click the Base Station Configuration link.
Figure 3.6 Base Station Attributes page
4.0.0
MK
CityCentral
CityNorth
CitySouth
CityEast
CityWest
3 In the Enter new zones below, comma separated field, type the names of base station
zones. Use commas to separate names.
4 Click Save Zone Changes. The new zone names appear in the Zone column.
Registering with the AP server after Zones defined
After you define zones, the base stations must re-register with the AP server so that the AP
server recognizes the base station as having a correct zone.
To re-register the base station with the AP server:
1 Establish a terminal session with the base station.
a From the Base Station Properties page (see Figure 3.11), click on the IP address of the
base station.
b A terminal session starts, where you can log in to the NNOS.
2 To assign the base station to zone, use the NNOS command “set system location”. This
generates a base station registration record.
3 To save the settings on the base station, type write. The change is written to Flash memory
on the base station.
4 Close the terminal session.
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5 To verify that the base station’s zone name is correct, refresh the web browser.
Defining ISPs
To define ISPs:
1 From the AP server’s home page, click Configure.
2 On the Configure page, click the ISP Management link.
Figure 3.7 ISP Management page
MK
4.0.0
174.192.047.1
174.167.123.1
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3 To add a new ISP, click the Add ISP button.The Create new ISP page opens.
Figure 3.8 Create new ISP page
Table 3.1 describes the fields on the Create new ISP page that access providers must
complete to add ISPs.
Table 3.1 Create new ISP page
Field
Description
ISP Name
Billing Record Time
A name for the ISP
The time of day when the provisioning server is polled for billing
information. This information includes the number of CPEs that
are assigned to a service level agreement.
IP address of the ISP provisioning server
ID numbers of the VLANs assigned to the ISP
An embedded number on the CPE that determines which Internet
Service Provider (ISP) owns the CPE device
IP address
VLANs
Mfg Tags
3-23
Changing ISP information
To change the information about the ISP:
1 From the ISP Management page, click the link of the name of the ISP whose information
you want to change.
Figure 3.9 ISP details page
2 Alter the fields on the page as desired. Click Save Changes.
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Monitoring ISPs and base stations
Using the AP server, you can view information about the status of ISPs and base stations that
are part of the network access provider network.
To view information about ISPs and base stations:
1 From the AP server home page, click Monitor. The Monitor ISPs - Base Stations page
opens.
Figure 3.10 Monitor ISPs- Base Stations page
4.0.0
Cell1Sector1
CityCentral
Cell1Sector2
CityCentral
Cell1Sector4
CityNorth
MK
3-25
2 To start a terminal session with the base station, and change the base station’s parameters
using the NextNet Operating System (NNOS), click the name of the base station.The Base
Station Properties page opens.
Figure 3.11 Base Station Properties page
MK
4.0.0
S1C2
CityCentral
153.149.100.54
3 Click the IP address. A terminal session starts with the base station.
For more information about changing NNOS parameters on base stations, refer to the
guide “Using the NextNet Operating System (NNOS), Version 2.”
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H A P T E R
CONFIGURING BASE STATIONS
CHAPTER4
Chapter overview
This chapter describes how to configure base stations. It describes:
• How to configure the base station so you can communicate with the base station using a
term connection, an SNMP connection, a web connection, and a Telnet connection
• The operating system parameters to configure before you deploy base stations
• How to set up a system component (called an “authority”) that grants CPEs access to your
network
Before you begin
To configure base stations before you deploy them on towers or buildings, you must first
supply power to the base station, and connect the base station to a PC using the serial cable/
serial connection. To perform these tasks:
1 Place an RF 50 ohm load or at least a 10dB RF attenuator on the RF connector. The load
or attenuator must be capable of 10 watts of dissipation.
2 Connect the base station to the TVS module by plugging the provided cable into the left-
most connector on the bottom of the base station. Then, plug the TVS module into a
power source.
3 Use the serial interface cable to connect your computer to the base station.
4 On your computer, set up terminal emulation access to the base station, as described in the
section “Setting up terminal emulation access” on page 4-28 in this guide.
5 If you have not already done so, start a terminal emulation session with the base station
you want to configure and log on to NNOS. (If you are using a Windows operating
system, you may want to use the Hyperterminal application to open the connection
defined in step 4.)
6 Configure the base station as described in the following sections of this chapter:
• “Setting base station configuration parameters” on page 4-33
• “Recommended parameter changes” on page 4-38
• “Setting up Syslog” on page 4-39
• “Configuring the authority that grants network access to CPEs” on page 4-40
• “Configuring the time signal used by base stations” on page 4-42
4-27
Setting up connection methods used to configure
base stations
The Expedience system allows you to connect to a base station using many methods:
• Terminal emulation over a serial line
• Telnet
• Web server
• SNMP server
Before you can use a particular method to connect to the base station, you must configure its
connection.
To configure the base station initially, you will most likely use a serial connection and a
terminal emulation session. Terminal emulation allows access through a direct RS-232
connection from a personal computer to the base station.
Setting up terminal emulation access
The terminal emulation connection is a physical RS-232 cable connection, between the base
station and a PC. Once the connection is set up, you can use a program—such as
Hyperterminal under the Windows operating system—to configure and communicate with
the base station.
Terminal emulation connection settings
To set up a terminal emulation connection, use these settings:
• 19.2k baud
• 8 data bits
• No parity
• 1 stop bit
• no flow control
Setting up Telnet access
To set up your system to use Telnet to access a base station:
1 Using your Term connection, at the NNOS command prompt, issue the following
command to enable Telnet:
set telnet state enabled
2 If you want to change the default port on which the Telnet server listens:
set telnet port
{portnumber}
The factory default is 23.
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3 To set the IP address, or range of IP addresses, of the remote computers that are allowed
to use Telnet to access the base station:
set telnet remote
{IPaddress | IPaddress mask}
where:
IPaddress is the IP address of the computer that is allowed to use Telnet to access the base
station.
IPaddress mask is a mask for a range IP addresses that are allowed to use Telnet to access
the base station.
4 If you want to change the Telnet timeout from the factory default of 5 minutes:
set telnet timeout
{time}
where {time} is the time, in seconds, that the Telnet session is allowed to sit idle before the
session ends.
5 Before you can telnet to the base station, you need to set the base station’s IP address.
a To set the base station’s IP address, at a NNOS prompt, type:
set IP address
{IPaddress}
where:
IPaddress is the IP address of the base station.
b To determine the base station’s address, use Terminal emulation over a serial line
connection to the base station. At a term connection’s NNOS prompt:
show IP address
Remember the base station’s IP address. You will need it later if you want to use Telnet
a web browser, or SNMP session to configure or monitor the base station.
Note: If you have assigned names to your base stations, you can also use the “show name”
command to determine the base station’s name. Then, you can telnet to the base station
using its name. For further information, refer to the section “Recommended parameter
changes” on page 4-38 in this guide.
6 For changed settings to take effect, you must write the changes to Flash memory and then
restart the base station.
a At the NNOS command prompt, type write.
b At the next NNOS command prompt, type reboot.
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Setting up web access
This section describes how to set up your base station for web access.
Note: To determine how parameters are currently configured, you can issue a “show”
command for the parameter you want to check. For example, a “show web state” command
will tell you if the base station already has the web server enabled. Most of the system’s
default settings for parameters will help ensure your base station is ready for web access when
the factory ships the base station.
To set up your system for web access:
1 Using your Term connection, at the NNOS command prompt, issue the following
command to enable the web server:
set web state enabled
2 To change the default web port number:
set web port
{port number}
The default port number is 80.
3 To specify the IP address of the remote computer or computers allowed to access the web
server on the Expedience device, specify a mask appropriate to your network. Type the
following command:
set web remote
{IPaddress | IPaddress mask}
where:
IPaddress is the address of the computer that is allowed to access the web server on the base
station.
IPaddress mask is a mask for a range of all IP addresses that are allowed to access the base
station web server.
4 If you changed the settings for the set web state or the set web port parameters, write
your changes to memory and then restart the base station.
a At the NNOS command prompt, type write.
b At the next NNOS command prompt, type reboot.
5 Open an Internet browser. In the address field, access the web server on the base station
by typing the IP address of the base station.
6 A user name and password window appears.
a If you want to be able to change configuration parameters, type the super user
password.
b If you only want to be able to view configuration parameters, type the user password.
c If you don’t know the password, contact your system administrator.
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Setting up SNMP access
This section describes how to set up your base station for SNMP access.
Note: To determine how parameters are currently configured, issue a “show” command for
the parameter you want to check. For example, a “show snmp state” command will tell you if
the base station already has the SNMP agent enabled. Most of the system’s default settings for
parameters will help ensure your base station is ready for SNMP access when the factory
ships the base station.
To setup your system for SNMP access:
1 Using a Term or telnet connection, at the NNOS command prompt, issue the following
command to enable SNMP:
set snmp state enabled
2 To specify the IP address of the remote computer or computers allowed to access the
SNMP server on the base station, specify a mask appropriate to your network. Type the
following command:
set snmp remote
{IPaddress | IPaddress mask}
where:
IPaddress is the address of the remote machine that is allowed to access the SNMP server.
IPaddress mask is a mask for a range of all IP addresses that are allowed to access the base
station’s SNMP server.
3 If you want to use SNMP traps:
set snmp traps enabled
4 To specify the IP address of the SNMP trap server on the network management
workstation:
set snmp trap server
{IPaddress}
where {IPaddress} is the IP address of the machine to receive SNMP traps.
5 Specify the trap level for the functions whose traps can be reported. To specify the level of
the SNMP trap messages that are sent to the trap server:
set snmp
{function} traplevel {variable}
where:
{function} is the feature whose trap level you want to set. Functions you can specify include
and stack.
airlink, config, nnmgr, reg mgr, relay,
{variable} is the trap level, with a value of 0, 3, 4, 5, or 7.
For more information, refer to the guide “Using the NextNet Operating System
(NNOS).”
4-31
6 Specify the SNMP community name. A community is a logical relationship between an
SNMP agent and one or more SNMP managers. The community has a name, and all
members of a community have the same access privileges.
To specify the community that will have read privileges:
set snmp read community
{name}
To specify the community that will have write privileges:
set snmp write community
{name}
For both parameters, {name} specifies the name of the community.
7 To allow the ability to configure parameters through SNMP access:
set snmp access enabled
8 If you changed the settings for the set snmp state, write your changes to Flash memory
and then restart the base station.
a At the NNOS command prompt, type write.
b At the next NNOS command prompt, type reboot.
Configuring SNMPc 5.0 for use with Expedience base
stations
If you are using the network management application SNMPc 5.0 from Castle Rock, change
the default community name of base stations.
1 Open the SNMPc 5.0 application and select a base station.
2 Within the application, use the set community command to set the base station’s
community name to “public”.
Note: The default community name is netman.
3 Repeat step 2 for each base station you want to manage.
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Setting base station configuration parameters
This section describes configuration parameters to set for proper base station operation.
You can use terminal emulation, Telnet, the web interface, or an SNMP session to configure
the parameters on the base station.Before you can use these methods, make sure the
connection is set up. For further information, refer to the section “Setting up connection
methods used to configure base stations” on page 4-28 in this guide.
To set up the base station:
1 Set the following parameters, in the order that follows:
• set airlink channel, as described on page 4-33 in this guide.
• set airlink downlink power, as described on page 4-34 in this guide.
• set airlink downlink bias, as described on page 4-35 in this guide.
• set vlan legacy id, as described on page 4-39 in this guide.
• set vlan mgmt id, as described on page 4-39 in this guide.
• set airlink state, as described on page 4-38 in this guide.
For more information about these configuration parameters, as well as a full list of
configuration parameters, refer to the guide “Using the NextNet Operating System.”
2 After setting the parameters, use the write command to write the settings into the flash,
non-volatile memory.
3 For changes to take effect, perform one of the following:
• Re-boot the base station
—OR—
• Power down the base station, and then re-power it.
set airlink channel
Set this configuration parameter to the frequency channel on which to run the airlink. For an
illustration of the channels that are supported in the various frequency ranges, refer to
Appendix B.
Example:
set airlink channel 15
4-33
set airlink downlink power
This parameter specifies the base station’s transmit power level.
The power levels you can specify depend on the type of base station you are using: a 2 watt
base station, or a 5 watt base station.
2 watt base station
Specify a power value from 10 to 31.
The maximum system power level is 10, which specifies +33 dBm (2 watts). The other power
levels are measured in 1 dB steps from the maximum.
Example: set airlink downlink power 10
Table 4.1 Transmit power levels
Power value
Power level
10
13
16
23
31
+33 dBm = 2.0 watts
+30 dBm = 1.0 watt
+27 dBm = 500 milliwatts
+20 dBm = 100 milliwatts
+12 dBm = 15.8 milliwatts
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5 watt base station
Specify a power value from 6 to 31. The maximum system power level is 6, which specifies
+37 dBm (5 watts) at the RF connector. The other power levels are measured in 1 dB steps
from the maximum.
To operate the base station at the 5 watt level, you must install a supplied channel filter.
Example: set airlink downlink power 10
Table 4.2 Transmit power levels
Power value
Power level
10
13
16
23
31
+37 dBm = 5 watts
+33 dBm = 2.0 watts
+30 dBm = 1.0 watt
+27 dBm = 500 milliwatts
+20 dBm = 100 milliwatts
+12 dBm = 15.8 milliwatts
set airlink downlink bias
This parameter specifies the portion of airtime (slots) available for use on the downlink
relative to the airtime for the uplink. There are always 6 slots available for the uplink.
The higher the bias, the more bandwidth is available for the downlink, due to more time
allocated to the downlink.
Example:
set airlink downlink bias 2
You must specify the same downlink bias for all base stations in a cell. Likewise, all base
stations within your system, regardless of the cell they are in, must have the same downlink
bias.
Note: If you are using both 4-QAM only RSUs and AMOD RSUs, do NOT use bias 1.
4-35
Table 4.3 describes the downlink rates for various modulation methods.
Table 4.3 Downlink rate based on modulation method
4-QAM
Bias
16-QAM
Downlink rate
1,337,358
1,719,413
2,127,308
2,294,515
2,424,466
2,530,766
Downlink rate
2,100,580
2,975,037
3,906,987
4,288,741
4,587,929
4,828,640
64-QAM
Downlink rate
2,863,803
4,230,661
5,686,667
6,282,967
6,750,392
7,126,514
16-QAM lite
Downlink rate
3,627,025
5,486,284
7,466,347
-------
Table 4.4 describes the uplink data rate when QPSK is the modulation method.
Table 4.4 Uplink data rate for 4-QAM modulation method
Bias
Uplink all
1,314,152
1,080,996
835,728
735,804
657,076
593,488
1 slot
210,264
172,959
133,716
117,729
105,132
94,958
2 slot
431,545
354,981
274,439
241,625
215,772
194,891
Table 4.5 describes the uplink data rate when 16-QAM is the modulation method.
Table 4.5 Uplink data rate for 16-QAM modulation method
Bias
Uplink all 1 slot
2,867,241
2,358,537
1,823,407
1,605,391
1,433,620
1,294,883
438,051
360,332
278,576
245,268
219,025
197,829
2 slot
926,489
762,112
589,196
518,749
463,245
418,415
Table 4.6 describes the uplink data rate when 64-QAM is the modulation method.
Table 4.6 Uplink data rate for 64-QAM modulation method
Bias
Uplink all 1 slot
3,942,456
3,242,988
2,507,184
2,207,412
1,971,228
1,780,464
584,068
480,443
371,435
327,024
292,034
263,772
2 slot
1,260,876
1,037,172
801,847
705,974
630,438
569,428
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Table 4.7 describes the uplink data rate when 16 QAM lite is the modulation method
Table 4.7 Uplink data rate for 16-QAM lite modulation method
Bias
Uplink all
5,256,608
4,323,964
3,342,912
-------
1 slot
2 slot
750,944
617,712
477,559
-------
1,661,571
1,366,777
1,056,668
-------
set system location
This parameter defines the zone to which the base station belongs.
During the design of the network, the access provider defines zones of coverage for the
network. For example, an access provider can divide a metropolitan areas into North, South,
East, West, and Central zones.
In the North zone, the network access provider decides to install three base station cells. All
base stations in this zone—regardless of their cell assignment—have the same zone name of
North.
The network access provider then assigns base stations to a specific zone by using the set
system location command.
Example:
set system location North
4-37
set system name
The parameter specifies the name of the base station.
For example, the network access provider has three base station cells in the zone called
North. All base stations in this zone—regardless of their cell assignment—have the same
zone name: North.
Using the system name, the network access provider provides a name for each base station.
This system name reflects where the base station is installed in the North zone.
To continue the example, a base station assigned the zone name of “North” is to be installed
near the intersection of 7th street and Randolph avenue. The base station is given the name
sevenandrandolphbase2. This name indicates that this is the second base station installed near
the street. Another base station (also in the North zone) is to be installed near the intersection
of Carmody drive and 45th avenue. It is given the name carmodyand45base1.
Example:
set system name SevenandRandolphBase2
set airlink state
This parameter enables the airlink.
After you specify the set airlink channel number, set airlink downlink power, and set
downlink bias parameters, set the airlink state to enabled, so changes can take effect.
Example:
set airlink state enabled
You can take the base station off the air by disabling the airlink.
Recommended parameter changes
Before deploying a base station, it is recommended that you assign the base station a cell
name and a sector name.
set system cell
This parameter specifies the cell name in which the base station is installed.
Example:
set system cell RiverBendRoad
set system sector
This parameter specifies the sector in which the base station is installed.
Example:
set system sector north
set DHCP state
If you want to use a DHCP server to assign IP addresses to base stations, set this parameter
to enabled.
Example:
set DHCP state enabled
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Setting legacy and management VLAN IDs
When the base station is shipped from the factory, the identification numbers for the legacy
VLAN and for the management VLAN are both set to 1.
If you or your ISPs use only CPEs that run Version 2.x software code or later, you do not
need to change the default id for either VLAN.
However, if you have some CPEs running version 1.x code, you need to set up a legacy
VLAN with an identification number different from the management VLAN ID. The legacy
VLAN then services all CPEs that run version 1.x software code.
set vlan legacy id
This command specifies the identification number for all legacy CPEs—CPEs that run
version 1.x software code. Make sure the legacy VLAN configuration setting is identical on all
base stations in the network.
Example:
set vlan legacy id 4
set vlan mgmt id
This command specifies the identification of the management VLAN. The management
VLAN is used for network management. It also handles authorization protocol messages. All
base stations attach to the management VLAN. A network access provider must have one
management VLAN. The VLAN identification number must be the same number on all base
stations in the network.
Example:
set vlan mgmt id 1
Setting up Syslog
This section describes how to set up Syslog options. Syslog is a tool that records operational
data, unusual system occurrences, system commands, and messages. To set up your system’s
Syslog options:
1 To enable Syslog, use a command line interface run over the network (such as telnet) or
use a serial line connection to the base station.
2 If you have not already done so, log on to NNOS. At the NNOS command prompt, issue
the following command to enable Syslog:
set syslog state enabled
3 Specify the level for the functions whose syslog events can be reported. To specify the
level of the messages:
set syslog
{function} level {variable}
where:
{function} is the feature whose level you want to set. Functions you can specify include
and relay.
airlink, config, nnmgr, reg mgr,
{variable} is the level, with a value of 0, 3, 4, 5, or 7.
For further information about the functions and Syslog levels, refer to the guide “Using
the NextNet Operating System (NNOS).”
4 To set the Syslog port number:
set syslog port 514
4-39
5 Set the Syslog server to the address of the network management workstation
set syslog server
{IPaddress}
where {IPaddress} is the address of the workstation that is running the Syslog application.
6 To verify the operation of Syslog, open the Syslog server, where you can view messages or
create Syslog message reports.
Configuring the authority that grants network access
to CPEs
This section describes how to set up a system component (called an authority) that grants
CPEs the ability to access the ISPs’ VLANs.
Table 4.8 describes the methods the network can use to grant network access to CPEs.
Table 4.8 Methods used to grant CPEs access to ISPs’ VLANs
Type of authority
Description
Remote authority
The ISP’s provisioning server resides on the ISP VLAN and is
used to grant network access to CPEs.
When the base station is configured to use remote authority, the
CPE’s network access request travels to the base station. The
base station then forwards the request to the network access
provider’s AP server. The AP server relays the request to the
proper ISP and the provisioning server.
The provisioning server is checked to ensure the CPE is
allowed to access the ISP’s VLAN. If so, the provisioning
server sends a record that grants access back to the base station.
The base station grants network access to CPEs. When this type
of authority is used, all CPEs are placed on the same VLAN,
which is the legacy VLAN.
Local authority
Note: The AP server, which acts to relay CPE service requests to the proper ISP VLAN, is
sometimes referred to as an AAA (“authentication authorization accounting” or “triple A”)
server.
Using base station caching feature for re-registering CPEs
Network access providers can also set up the base station to grant access to CPEs that have
already been granted permission to operate on the network. When a CPE re-registers, the
base station uses the existing parameters stored on the base station, such as the CPE’s VLAN
assignment and the number of hosts the CPE is allowed to service. For more information on
this feature, refer to “set aaa cache” in the guide “Using the NextNet Operating System
(NNOS).”
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Remote authority: setting up the provisioning server to grant
CPEs network access
Under remote authority the provisioning server grants CPEs network access. All requests for
access are relayed to the appropriate ISP through the network access provider’s AP server.
To set up remote authority:
1 Contact the appropriate ISP to make sure the provisioning server hardware and software
are properly installed.
2 Add appropriate routes to the base station’s routing table.
Use the NNOS “route add” command to add a route (from the base station to the AP
server), and a reverse route (from the AP server to the base station) to the base station’s
route table.
Note: Steps 3 through 6 help you configure the base station to use the AP server as a relay
for CPE registration requests. The AP server forwards the registration requests to the
appropriate provisioning server. To complete these steps, use Terminal emulation and a
serial line connection to the base station. You can also use Telnet, SNMP, or web access if
access for these connection methods is configured.
3 To specify the address of the AP server that receives records:
set aaa server address
{IPaddress1},{IPaddress2}
where
{IPaddress1} is the address of the workstation that runs the AP server.
{IPaddress2} is the address of a redundant workstation that runs the AP server if the
workstation identified by IPaddress1 goes down. Control returns to the workstation
identified by IPaddress1 when the redundant workstation goes down.
4 To specify the port on which the AP server listens:
set aaa port 12451
5 Configure the method the base station uses to grant network access to CPEs:
set aaa authority remote
where remote indicates the provisioning server (through the AP server relay) grants
network access to CPEs that are attempting to connect to the network.
6 To activate the AP server feature:
set aaa server enabled
7 To store the changes in Flash memory:
write
4-41
Local authority: setting up the base station to grant CPEs
network access
If you establish local authority, the base station always grants CPEs network access. All CPEs
are placed on the same VLAN, which is the legacy VLAN.
To set up local authority:
1 Disable the AAA server feature:
set aaa state disabled
2 Configure the method the base station will use to grant network access to CPEs:
set aaa authority local
where local indicates the base station grants access to CPEs that want to connect to your
network.
3 To store the changes in Flash memory:
write
4 Reboot the base station. When the CPEs re-register with the base station, the base station
places them on the legacy VLAN.
Configuring the time signal used by base stations
Expedience base stations require a time synchronization signal in order to determine the
proper timing for time division duplexing (TDD).
Because most Expedience system deployments use multiple base stations, at multiple cell
sites, most service providers will configure their base stations to use the time synchronization
signal generated by the Expedience system’s global positioning system (GPS).
However, if your deployment includes only one base station or one cell site, you can disable
the use of an external GPS. Your base station will then use a time signal generated by a base
station for time synchronization.
The GPS supplied time signal is known as an external time signal, which is the default setting
of the base station when shipped from the factory.
The base station generated time signal is known as an internal time signal.
Configuring the GPS to supply the time signal
To use the GPS to supply the time signal to base stations:
1 Supply power to the entire system, as described in the section “Powering base stations” on
page 5-57 in this guide.
2 Connect the GPS to a base station, as described in the section “Connecting the GPS
equipment to a base station” on page 5-56 in this guide.
3 Connect all base stations in your cell to each other, in a daisy chain manner. For further
information, refer to the section “Connecting the GPS equipment to a base station” on
page 5-56 in this guide.
4 Configure the base station to use an external time synchronization signal:
set airlink timing external
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5 Enable the set airlink afc parameter. This parameter allows a base station to automatically
frequency lock to the external pulse from the GPS, which is one pulse per second.
set airlink afc enabled
6 Save changes in Flash memory by issuing the write command.
7 For changes to take effect, reboot or reset the base station’s power. To reboot, type the
following at the command prompt:
reboot
Configuring a base station to supply a time signal
There are two scenarios in which you might want to set up a base station to use internal time
synchronization.
The first is a single base station at a site that is not part of a larger system with other sites.
This base station may be set to use internal time synchronization.
The second scenario is a multiple base station site that is not part of a larger system with other
sites. One of the base stations is set as a master base station. The master base station is set for
internal time synchronization. It generates the 1-pulse-per-second (pps) for itself, and also
outputs the 1 pps pulse for the other base stations. As such, you then set the other base
stations to use external time synchronization.
To use a base-station generated time signal:
1 Connect all base stations in your cell to each other, in a daisy chain manner.
2 Supply power to the entire system, as described in the section,“Powering base stations” on
page 5-57 in this guide.
3 Configure the single base station or the master base stations to use an internal time
synchronization signal:
set airlink timing internal
4 Disable the set airlink afc parameter. You must disable this parameter, which otherwise
would allow a base station to automatically frequency lock to the external pulse from the
GPS.
set airlink afc disabled
5 Store your changes in Flash memory by issuing the write command.
6 For changes to take effect, reboot or reset the base station’s power. To reboot, type the
following at the command prompt:
reboot
4-43
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C
H A P T E R
INSTALLING THE BASE TRANSCEIVER
STATION (BTS)
CHAPTER5
Chapter overview
This chapter describes how to install the indoor/outdoor base transceiver station (BTS). It
describes:
• Components used to mount the base station on a building or tower
• Connecting the base station to the cell and to cell-site components
Before you begin
Before you install a base station on a roof top or tower:
• It is recommended that you assign a name to the base station. For more information refer
to Chapter 2, “Configuring base stations‚” in this guide.
• It is also a good idea to configure the base station.
5-45
Cell wiring
Figure 5.1 shows how a cell, base stations, and ancillary equipment are wired together.
Figure 5.1 Cell wiring diagram
GPS unit
Panel antenna*
Coax jumper*
GPS Interface
cable
Coax - main feed*
Coax jumper*
Base station
Optional serial
connection and
laptop computer
GPS inter-base
station cable
Load
Termination
Ethernet/power
cable
TVS
module
DC power cable*
Ethernet
cable*
In-line or panel fuse*
Backbone swtich*
Power supply*
Backbone
connection cable*
UPS*
AC power cord*
*Not provided as component
of standard NextNet Wireless
base station product;
NextNet Wireless can provide
power supply, if desired.
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Base station connectors
Figure 5.2 shows the connectors that the base station supports.
Figure 5.2 Base station connectors
Antenna connector
J4—Serial connector
J3—GPS connector
J2—GPS connector
J1—Ethernet/power connector
5-47
Ethernet (data) and power connector
The Ethernet and power connector supplies data and DC power to the base station.
The connector to the TVS module has 8 pins:
• Ethernet transmit uses 2 pins.
• Ethernet receive uses 2 pins.
• Power V- uses 2 pins.
• Power V+ uses 2 pins.
Figure 5.3 shows the Ethernet and power connector which plugs into the TVS module.
Figure 5.3 Ethernet (data) and power connector
The connector to the base station has 13 pins.
Figure 5.4 Ethernet (data) and power connector
10
11
13
12
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Ethernet/power connecting cable
Depending on your needs, you can order any of the following cables to connect the base
station to the TVS module.
Table 5.1 Ethernet/power base station cable choices
Cable part number
Length (feet)
597-6027-0002
597-6027-0004
597-6027-0006
597-6027-0010
597-6027-0025
597-6027-0050
597-6027-0100
597-6027-0200
597-6027-0300
10
25
50
100
200
300
Table 5.2 describes the pins of the the Ethernet/power cable that connects the base station to
the TVS device.
Table 5.2 Ethernet/power cable pins
Pin
TVS connection
Base connection
10
11
12
13
Tx+
TxRx+
Rx+48 VDC
+48 VDC
-48 VDC
-48 VDC
-48 VDC
-48 VDC
+48 VDC
+48 VDC
RxRx+
not used
not used
TxTx+
not used
not used
not used
Table 5.3 describes the color and function of the wires in cable 597-6027-0xxx.
Table 5.3 Function of wires in cable 597-6027-0xxx
Wire color
Wire function
White/orange
Orange
White/green
Green
Red
Red/white
Black
Black/white
Tx+ Ethernet
Tx- Ethernet
Rx+ Ethernet
Rx- Ethernet
+48 VDC
+48 VDC
-48 VDC
-48 VDC
5-49
TVS module connectors
The TVS module has connectors on both its right and left sides.
Base station to TVS connector
The base station connector supplies power and an Ethernet connection to the base station.
Connect cable 597-6027-0xxx to this side of the TVS module.
+48 VDC
BASE
CONNECTION
TX+(OG/WT)
TX-(ORG)
RX+(GR/WT)
RX-(GRN)
- (BLK/WT)
- (BLK)
+ (RED/WT)
+ (RED)
Figure 5.5 TVS module connector: Base station connector
POWER/ETHERNET
ETHERNET
Note: Use the AUX +48 VDC and AUX ETHERNET connections only if you need to cut
off the circular connector from the power/Ethernet cable (597-6013-0xxx). For example, you
might not be able to use the circular connector if it cannot fit through a space or hole in a wall
at the installation site. Instead, you may split the cable and put a 4 position .150" spaced
terminal block on the Ethernet wires, and a 4 position .200" spaced terminal block on the
power wires. Then, you will plug the appropriate connector from the split cable into the
corresponding connector in the TVS module. Table 5.3, “Function of wires in cable 5976027-0xxx” on page 5-49 describes the wires in the cable.
Power supply cable and ISP Ethernet network connector
The other side of the module has a connector for both an Ethernet cable coming from your
ISP network and for the +48 VDC power coming from a power supply.
Note: To ensure your base station is properly protected from possible lightning strikes,
ensure you plug the power cable coming from your power supply into this connector in the
TVS module. If you plug the power cable into the base station connector side, the base
station will power up, but you will not be properly protected against possible lightning strikes.
Figure 5.6 TVS module connector: power/Ethernet connector
ISP
ETHERNET +48VDC
POWER
5 AMP
+-
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Table 5.4 describes the recommended mating connectors to use with ???? for???. The use of
these connectors are optional.
Table 5.4 Recommended mating connectors (optional)
Ref des
Description
Phoenix contact
part number
Digi-key part number
J1
J3
J4
2pin, 5.08mm Terminal Plug
4pin, 5.08mm Terminal Plug
4pin, 3.81mm Terminal Plug
1757019
1757035
1803594
277-1011-ND
277-1013-ND
277-1163-ND
GPS connectors
The base station supports two GPS connectors: one connector is used to supply the GPS
signal, either by a direct connection to the GPS device, or by a daisy chain connection to
another base station in the cell. The other GPS connector is used to make a daisy-chain
connection from the current base station to the next base station.
Figure 5.7 GPS connector
An RS-422 line feeds 1PPS+ and 1PPS- with the time synchronization pulse from the GPS
equipment to the base station.
An RS-422 line also feeds 422Data+ and 422Data-, to allow data communication from the
GPS device to the base station. This is one-way communication, with the GPS device giving
the base station time information.
The 18V+ and ground pin supply power to the GPS device from the base station. The GPS
device uses 18 volts DC at 150 milliamperes.
GPS connecting cable/Inter-base station connecting
cables
You need one GPS device per cell. You then directly connect one base station within that cell
to the GPS device. Next, the other base stations are connected to each other, using a daisy
chain wiring scheme, so that all base stations in the cell can receive a GPS signal.
You can choose the length of the cable that connects the base station to the GPS receiver.
5-51
• The cable that comes standard in the base station site installation kit is 100 ft. (part number
597-6025-0100).
• If desired, you can use a shorter cable to connect the base station to the GPS receiver. This
alternate cable is 25 ft. (part number 597-6025-0025).
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You can also choose the length of the daisy-chain cable that connects one base station to
another base station.
• The standard cable shipped in the base station installation kit is 3 ft. (part number 5976026-0003).
• If desired, you can use a longer cable to connect one base station to another. This cable is
10 ft. (part number 597-6026-0010)
• If you need to remove a base station for service, you can use the longer, 10 ft. cable to
jumper the GPS cables together, and continue cell operation.
The last base station in the daisy chain requires a load termination to be connected to the
GPS connection. This base terminator plug is 100 ohm (part number 515-6005-0001).
Serial interface connector
For base station configuration, the serial interface connector lets you directly connect the
base station to a computer. The seven-pin connector is an RS-232 cable (10 ft.), physical
interface.
Figure 5.8 Serial interface connector
A Ground
B Not used
C Not used
D Not used
E Tx data
F Rx data
G Not used
Serial interface connecting cable
Cable 597-6028-0010 has a female, circular connector on one end, and a DB-9 female
connector on the other end. Plug the DB-9 end of the cable into a computer. Plug the other
end of the cable into the serial interface connector.
Antenna connector
The antenna connector is a type N female connector. It has a built-in, internal 1/4 wave stub
lightning protector. Connect the base station to the antenna using a coaxial cable. Connect
the proper lightning ground wiring to the antenna lightning protector.
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Mounting the base station
You can mount the base station to any surface. To mount the base station to a wall, you need
to use the supplied mounting brackets. If you are installing the base station on a tower, you
need to use mounting plates, which you need to acquire from another equipment supplier.
Mounting the base station to a wall
To mount the base station to a wall:
1 Find a surface suited to base station installation.
a Use installation kit 123-0100-0130 to install the base station to a wall or back board. The
kit supplies a bracket and hardware that are necessary to mount the base station.
b Plan to install the base station vertically, so the antenna connector is at the top (facing
skyward), and the other circular connectors are at the bottom (facing the ground).
c Make sure the area above and below the location where you want to install the base
station has a good distance for clearance. This clearance allows for proper air circulation
and heat flow from the heat sink fins on the back of the base station. The clearance also
allows for the coaxial cable and the other cable connections.
2 Drill mounting holes into the surface, according to the dimensions shown in Figure 5.9.
Figure 5.9 Base station mounting template
4.000"
17.500"
0.375" dia (4)
3 To attach the base station to a wall, use the mounting brackets. Install them on the base
station first, then attach the brackets to the wall. To attach the brackets to the base station,
use 5/16 inch x 18 inch UNC thread bolts and a lock washer which are supplied in the
installation kit. Use the optional bolts to then attach the bracket to the surface.
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Mounting the base station to a tower
To mount the base station on a tower:
1 Mount a back board or plate to the tower.
This back board or plate is custom hardware supplied by you, the service provider.
Examples of material you may want to use for your back board or plate include a 1/4 inch
aluminum plate, 3/4 inch green-treated plywood, or 2/12 inch green treated lumber.
2 After you have mounted your back board or plate to the tower, mount the base station to
the plate using installation kit 123-0100-0130.
Mounting the base station to a 19 inch rack
Base stations can be mounted to a 19 inch relay rack. Typically, NextNet Wireless stages this
rack for customers as a service.
After staging, the base stations are mounted in the rack and wired to the TVS modules, the
power supply, the backbone switch, and grounding plate.
If you desire to stage your own relay rack, you must use two 19 inch brackets (part number
350-0100-0101) and at least one grounding plate (part number 30-0100-0020).
Connecting the antenna to the base station
This section provides tips you can use to connect the antenna to the base station. It also
provides step-by-step instructions for connecting the components to each other.
Antenna connection tips
Use the following tips when connecting the base station to the antenna:
• You connect the antenna to the base station using a coaxial cable. The size of the cable
depends on the distance between the base station and the antenna.
• The greater the distance, the larger your coaxial cable needs to be, in order to maintain
low signal loss.
• It is recommended that you keep signal loss to a minimum. At a maximum, the signal
loss should be no more than 2 to 3 dB, including all coaxial cable and connectors.
• Use short coaxial jumpers from the base station to the main coaxial line, and from the
main coaxial line to the antenna. It is recommended you use 1/2 inch flexible line, of the
shortest length possible, while still allowing the flexibility to make a good connection.
• The base station contains an antenna connector with a 1/4 inch wave stub lightning
protector. You do not need to place an external lightning protector in the coaxial cable.
Connecting the antenna to the base station
To attach the antenna to the base station:
1 Mount the antenna according to the manufacturer’s instructions.
2 Connect one end of a short coaxial jumper to the antenna. Connect the other jumper end
to the main coaxial cable.
3 On the base station’s antenna connector, connect one end of a short coaxial jumper.
Connect the other jumper end to the main coaxial cable coming from the antenna.
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4 Make sure the coaxial line is properly grounded.
5 Properly seal the co-axial connections with weatherproof components, tape and wrap.
Connecting the GPS equipment to a base station
The GPS equipment provides a time synchronization signal to the base station. This signal is
needed to ascertain the proper timing for time division duplexing (TDD).
The equipment is a smart antenna in a sealed, shielded, self-contained unit that houses a GPS
receiver, GPS antenna, and interface circuitry.
When powered, the GPS provides accurate time, with a time pulse of one pulse per second,
synchronized to Universal Time, Coordinated (UTC) within 150 nanoseconds.
GPS equipment mounting tips
You must use the NextNet Wireless supplied GPS system to supply a time synchronization
signal to the base stations in a cell. You cannot use a GPS from another manufacturer.
The GPS does not ship with mounting accessories. You can obtain these accessories from
many suppliers around the world, especially distributors of marine products.
Follow these tips when mounting the GPS:
• Mount the GPS unit on a threaded pipe or pole.
• The GPS mounting socket accepts a 1.0000 x 14 straight thread. It is recommended that
the pole/pipe you use be 1.000 inch.
• Secure the pipe or pole to the building or other support structure.
• Ensure at least half of the sky is clearly visible to the unit.
• Expose the unit to the southern portion of the sky. GPS satellites move generally from the
southwest to the northeast.
Connecting the GPS unit to the base station
One GPS unit can support numerous base stations in the same cell.
Use the GPS-to-base station cable to attach the GPS unit to one of the base stations in the
cell.
To connect the cable to the GPS unit and to the base station (both of which have already
been installed and mounted):
1 Connect the cable’s molded, circular female connector to the GPS unit.
2 After connecting the cable to the GPS unit, run the cable to the base station. Plug the
cable’s other end into the base station’s GPS connector.
3 Secure the cable that you just ran to an appropriate support structure. Coil and tie any
excess cable.
4 The GPS unit receives its power from the base station. The base station supplies power to
the GPS device, which uses 18 volts DC at 150 milliamperes.
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5 So that the remaining base stations in the cell can receive a GPS signal, connect a base
station adjacent to the base station you just connected to the GPS unit.
Continue to use the daisy chain wiring scheme to connect the remaining base stations, until
all of the base stations within the cell are connected to each other.
On the last base station in the daisy chain, connect the load termination on the open GPS
connection.
Connecting to the backbone network
The base station connects to a TVS module. You then connect the TVS module to your
network. Typically, base stations connect to a level 2 switch at the cell site, using a 10BaseT
connection. The switch controls the base station data traffic to and from the backbone
network.
Connect the switch to the backhaul network using the appropriate cabling.
Powering base stations
This section describes tips for powering base stations, as well as the component connection
sequence you need to use to properly power base stations.
Powering tips
• It is recommended that you use a redundant power supply for base stations.
• Each base station requires 48 volts DC at 3.0 amps maximum.
• The ground of the power can be either negative or positive. The 48 volt power input to the
base station is floating, so either the positive or negative can be grounded.
• Power input is polarity sensitive, so be sure you connect V+ and V- properly.
• Depending on the type of equipment you own, supply power to the Ethernet switch and
backbone network equipment.
• It is recommended that you use an uninterruptable power supply (UPS).
Tips for sizing the UPS include:
• Size the voltage and amperage of the power supply according to the number of base
stations at your cell site.
• Size the UPS according to the efficiency of the DC power supplies and power
requirements of the other ancillary equipment, such as the Ethernet switch and
backbone network equipment.
• Consider the time you want to allow the system to operate on the UPS.
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Powering the base station
The base station does not have a power switch. Rather, it receives its power when the UPS,
power supply, and TVS module are connected to the base station through the Ethernet/
power cable.
To connect the base station to a power supply, connect these components in the order that
follows:
1 Connect the base station to the antenna.
2 Connect the GPS to a base station, and use a daisy chain wiring scheme to connect the
other base stations.
3 Connect the base station to the TVS module using the Ethernet/power cable of the
desired length.
4 Use an Ethernet cable to connect the TVS module to the network. Use a standard DC
power cable to connect the TVS module to the power supply.
5 Connect the power supply to the UPS.
6 Connect the UPS to an AC power supply.
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C
H A P T E R
INSTALLING THE CABINET-MOUNTED
BASE RADIO (CBR)
CHAPTER6
Chapter overview
This chapter describes how to install the cabinet-mounted base radio (CBR). It describes:
• Installing the cabinet onto a 19 inch rack
• Installing the power supply and switch
• Installing the CBR into the base station cabinet
• Connecting the CBRs to the cell and to cell-site components
Before you begin
Before you install CBRs:
• It is recommended that you assign a name to the CBR. For more information refer to
Chapter 2, “Configuring base stations‚” in this guide.
• It is also a good idea to configure the base station with channel, VLAN, power, and other
parameters, as described in Chapter 2, “Configuring base stations‚” in this guide.
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Installation overview
This section provides an overview of the tasks you will perform when installing CBRs.
To install the CBRs:
1 Install the mounting brackets to the cabinet, then attach the cabinet to the rack.
Note: Do not operate the system before you have securely mounted the cabinet to a standard
19" rack that can handle the weight of the total system. To calculate the weight of your
system, note that the housing weighs 43 pounds, each base station weighs 18 pounds, and
each filter weighs 3.5 pounds.
So, if you have one cabinet, one CBR, and one filter, the weight of the total system is 64.5
pounds. Adjust this figure according to the number of CBRs and filters that you are using.
2 Attach the power supply and switch to the rack.
3 Insert the pre-configured CBRs into the cabinet.
4 Connect the cabinet to the following components:
• Switch
• Power supply
• Antennas or antenna filters, if filters are required.
• GPS
5 Follow your company’s good grounding practices. Typically, you will ground the cabinet
bus bar and the power supply.
6 Power on the base stations.
For further information about these tasks, refer to the sections in this chapter.
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Installing the mounting bracket and attaching
cabinet to the 19-inch rack
Before inserting CBRs into the cabinet, attach the cabinet to the rack. To attach the cabinet to
the rack:
1 Attach a mounting bracket to the left side and right side of the cabinet using the 16
supplied screws (8 per side).
Figure 6.1 Cabinet mounting bracket
Step 1: Attach to cabinet.
Step 2: Attach to rack.
2 Attach the cabinet to the rack with the 8 supplied screws, 4 for each side.
Note: Do not operate the system before you have securely mounted the cabinet to a standard
19" rack that can handle the weight of the total system. To calculate the weight of your
system, note that the housing weighs 43 pounds, each base station weighs 18 pounds, and
each filter weighs 3.5 pounds.
So, if you have one cabinet, one CBR, and one filter, the weight of the total system is 64.5
pounds. Adjust this figure according to the number of CBRs and filters that you are using.
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Attaching the switch and power supply to the rack
Figure 6.2 shows where the switch and power supply should be installed on the rack, in
relation to the cabinet and CBRs.
Figure 6.2 Location of switch and power supply in rack
CBRs
Switch
Power supply
Installing the CBRs into the cabinet
To install the CBR in the cabinet:
1 Grasp the CBR by handles on each side of the CBR.
2 Slide the CBR into the cabinet, aligning the guides along the side of the CBR with the
gliders inside the cabinet.
To ensure you align the CBR properly into the pre-installed harness connections, there is a
guide pin on the back of the cabinet that fits into a guide pin opening on the back of the
CBR. This guide pin will help the connectors on the back to align correctly.
3 When the CBR is properly installed and aligned in the cabinet, the plastic latches on the
side of the front plate snap into place.
Note: Always make sure the CBR is slid greater than halfway into the cabinet. A CBR that is
not at least halfway installed in the cabinet could fall out of the cabinet.
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Connecting CBRs to cell (cell wiring)
There are minimal wiring tasks for you to perform, as the CBR simply slides into the preexisting wiring when you place the CBR in the cabinet.
The cabinet into which the CBR is installed has a pre-wired harness. This harness supplies
power and Ethernet connectivity to the CBR. After you connect the antenna to the
appropriate connector, the CBR also receives airlink traffic. Finally, the harness supplies an
alarm capability to the CBR, as well as a GPS signal.
Note: Make sure you have made all antenna connections before attempting to transmit. Do
not attempt to transmit before the antennas are connected.
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Figure 6.3 shows how a cell, 4 CBRs, and ancillary equipment are wired together.
Figure 6.3 Cell wiring diagram
To antennas
Cabinet mounted
base radios
Channel filters
(if required)
Power cables
Ethernet cables
Switch
Power supply
AC power
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Connecting power to the CBRs
This section describes how to supply power to CBRs in the cabinet, as well as
recommendations for the type of power supply to use.
When choosing a power supply, keep in mind:
• Each base station requires 150 watts at 48 volts. So, if your cabinet holds 8 CBRs, the
power supply should provide 1250 watts, at a minimum.
• The power supply you choose should use an “n + 1” configuration, so that the CBRs have
a backup power source in case one of the power supply modules fails.
Powering the base station
To connect the base station to a power supply, connect these components in the order that
follows:
1 Connect the CBR to the antenna.
2 If you are using a GPS to supply a timing pulse to the base stations, connect the GPS to
the GPS connector on the cabinet. Place a terminal plug on the other GPS connector on
the cabinet.
Note: If you are using a CBR to supply the timing pulse to the other CBRs, set up the base
station as described in the section “Configuring the time signal used by base stations.” The
cable harness in the cabinet then supplies the other CBRs in the cabinet with timing
information.
3 Connect the Ethernet cable to the switch.
4 Connect the CBR to the power supply.
5 Connect the power supply to the UPS, if a UPS is available.
6 Connect the power supply and the UPS to an AC power supply.
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Figure 6.4 shows the location of the power connection on the bottom of the cabinet.
Figure 6.4 Power connections on bottom of cabinet
DO NOT
DISCONNECT.
Pre-wired power and
NextNet Wireless
preferred power supply
NextNet Wireless
preferred power supply
connector
50 Amp power
connector (optional, for
customer-provided
power supply)
30 Amp battery backup
connector
Table 6.1 describes the power connectors that you must use with the cabinet. If the exact
connector is not available, use a connector that is similar to the one listed
Table 6.1 Connector type to use with cabinet connectors
Connector
Connector type to use with
NextNet Wireless preferred power supply
connector
50 Amp power connector (optional, for
customer-provided power supply)
30 Amp battery backup connector
Molex #39-01-2180
Molex #42816-0212
Phoenix #1848892
To connect power:
1 Perform one of the following:
• If you are using a power supply from or recommended by Nextnet Wireless, plug that
connector into the NextNet Wireless supplied power connector on the bottom of the
cabinet.
• If you are using a different power supply, connect it to the 50-amp power connector,
found on the bottom of the cabinet.
2 If desired, connect a battery backup power supply to the battery backup connector.
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Powering tips
• It is recommended that you use a redundant power supply for base stations.
• Each base station requires 150 watts at 48 volts of power.
• The ground of the power can be either negative or positive. The 48 volt power input to the
base station is floating, so either the positive or negative can be grounded.
• Power input is polarity sensitive, so be sure you connect V+ and V- properly.
• Depending on the type of equipment you own, supply power to the Ethernet switch and
backbone network equipment.
• It is recommended that you use an uninterruptable power supply (UPS).
Tips for sizing the UPS include:
• Size the voltage and amperage of the power supply according to the number of base
stations at your cell site.
• Size the UPS according to the efficiency of the DC power supplies and power
requirements of the other ancillary equipment, such as the Ethernet switch and
backbone network equipment.
• Consider the time you want to allow the system to operate on the UPS.
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Grounding the CBRs
There is one grounding bar in each cabinet. Each bank of 4 CBRs are grounded to the bar.
The grounding bar also contains locations for grounding terminals so that you can ground the
CBRs to your building’s ground bar.
Figure 6.5 Grouding the CBRs
Grounding lugs
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Turning on the CBR’s power
The front panel of a CBR has a programming cable connection, 5 light-emitting diodes, and a
power button. Figure 6.6 shows the front panel of the CBR.
Figure 6.6 CBR LEDs
DIAGNOSTICS
PWR
NET
PPS
AIR
ALM
POWER
To turn on the CBR, press the power button. The LEDs then light. Table 6.2 describes what
the base station LEDs indicate.
Table 6.2 Description of LEDs on the base station
LED
1 (PWR)
2 (NET)
3 (PPS)
4 (AIR)
5 (ALM)
Description
When this green LED is lit, the CBR has power.
When this yellow LED is lit and blinking, information is being received on the
CBR’s Ethernet port.
The LED indicates that the CBR is receiving the 1 pulse per second signal.
When this LED is lit, the airlink on the CBR is operating.
When this red LED is lit, an alarm on the CBR has been triggered.
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Base station connectors
This section describes the GPS connectors and the serial cable connectors. The serial cable is
used to configure the base station with information that is unique to the carrier.
GPS connectors
Figure 6.7 shows the connectors that the base station supports.
Figure 6.7 Connector on the serial cable used in configuring base stations
An RS-422 line feeds 1PPS+ and 1PPS- with the time synchronization pulse from the GPS
equipment to the base station.
An RS-422 line also feeds 422Data+ and 422Data-, to allow data communication from the
GPS device to the base station. This is one-way communication, with the GPS device giving
the base station time information.
The 18V+ and ground pin supply power to the GPS device from the base station. The GPS
device uses 18 volts DC at 150 milliamperes.
GPS connecting cable/Inter-base station connecting
cables
You need one GPS device per cell. You then directly connect one GPS connector on the
cabinet to the GPS device. Then, on the remaining GPS connector on the cabinet, you
connect the load termination.
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Power supply cable connections
Table 6.3 describes the pins of the power cable used with the CBR.
Table 6.3 Power cable pins
Pin number
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
American wire
gauge (AWG)
Color
18 AWG
18 AWG
Black
Black
18 AWG
18 AWG
Black
Black
18 AWG
18 AWG
22 AWG
22 AWG
18 AWG
18 AWG
Black
Black
White
Green
Red
Red
18 AWG
18 AWG
Red
Red
18 AWG
18 AWG
Red
Red
Diagnostic cable connections
It is recommended that you use the diagnostic cable provided by NextNet Wireless to
configure the CBRs. One end of the cable has a RJ-45 type connector.
Table 6.4 describes the cable’s pins.
Table 6.4 Diagnostic cable pin connections (RJ-45)
Pin number, color
Connection
4, red
5, green
6, yellow
no connection
no connection
no connection
GND
RXD
TXD
no connection
no connection
no connection
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The other end of the cable has a DB9 cable connector. Figure 6.8 describes the cable’s pins.
Figure 6.8 Diagnostic cable: DB9 connector pins
Yellow/RXD
Green/TXD
Red/GND
Fuses and Ethernet cable connections on cabinet
Each CBR has a corresponding fuse and Ethernet cable connection on the cabinet. The CBR
that occupies the lowest position in the cabinet is number 1, and the CBR that occupies the
highest point in the cabinet is number 8.
Figure 6.9 illustrates the Ethernet cable and fuses that correspond to each CBR.
Figure 6.9 Fuses and Ethernet cable connections on cabinet
1.. .. .. .. .. .. .. .. .. .. .. 8
1.. .. .. .. .. .. .. 8
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Checking and replacing fuses
The system uses a standard fuse, AG3, 5 amps, 250 volts.
To remove a fuse from the cabinet:
1 Insert a flat head screw driver into the slot on the front of the gray fuse case.
2 Turn the screw driver counter-clockwise about 1/8th of a turn, until the fuse case pops out
of the slot.
Figure 6.10 Removing fuse from cabinet
3 The fuse slides out of the back of the case.
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Wiring alarms for CBRs
Figure 6.11 shows the alarm connections on the cabinet.
Figure 6.11 External alarm connections
A2
BASE 2
A1
A2
A1
BASE 1
+ - + - + - + -
A2
BASE 4
A1
A2
A1
BASE 3
+ - + - + - + -
A2
BASE 6
A1
A2
A1
BASE 5
+ - + - + - + -
A2
BASE 8
A1
A2
A1
BASE 7
+ - + - + - + -
Connecting to the backbone network
Typically, base stations connect to a level 2 switch, which is also installed on the rack. The
switch controls the base station data traffic to and from the backbone network.
Connect the switch to the backhaul network using the appropriate cabling.
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C
H A P T E R
TESTING AND MANAGING THE NETWORK
Chapter overview
This chapter describes how to test the network before the network is used by ISPs. The
chapter also provides an overview of network management tasks.
Testing the setup overview
This section provides an overview of the steps that help network access providers test the
setup of the network before the network is rolled out.
To test the network setup:
1 Install and configure the AP server, as described in this guide.
2 Install and configure the base station, as described in this guide.
3 Power the base station, as described in this guide.
4 Work with the ISP to install the ISP’s provisioning server
5 Test the connection between the AP server and the ISP provisioning server.
6 Ensure that CPEs can access the ISP’s VLAN.
Steps 4 through 6 are described in the sections that follow.
Installing the ISP’s provisioning server
The provisioning server on the ISP VLAN contains a record for each CPE used by the ISP’s
subscribers.
The ISP is responsible for installing and configuring the provisioning server, and for adding
CPE records to the CPE database on the provisioning server.
For information about installing and using the provisioning server, refer to the guide,
“Configuring and monitoring the ISP network.”
As a network access provider, you must work closely with the ISP to ensure the server is set
up correctly and is operating with the network access provider’s control VLAN.
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Testing the connection between the AP server and the
provisioning server
To make sure that the AP server and the provisioning server are communicating:
1 On the provisioning server, open the home page of the provisioning server interface.
For more information about the provisioning server, refer to Chapter 2, “Working with
the provisioning server” in the guide “Configuring and monitoring the ISP network.”
2 On the home page, check the Access Provider Connection group. The Status field shows
if the provisioning server and the AP server are connected.
3 To refresh the status, click the Refresh Status link.
Ensuring CPE access to ISP VLAN
Use an indoor CPE to test CPE access to the ISP’s VLAN.
To ensure that CPEs can access the ISP VLAN:
1 Make sure the ISP has integrated their customer relationship management (CRM)
application with the provisioning server and the server’s CPE database. Use the CRM
application to add a CPE to the CPE database on the provisioning server.
2 Install and power up the indoor CPE as described in the guide “Expedience Broadband
Wireless Access Modem”. This guide describes how to set up the CPE and scan for
service. During installation, the CPE attempts to register with the base station on which
you are performing the test.
3 If the AP server recognizes the base station’s zone (as defined in the section “set system
location” on page 4-37) the AP server forwards the request to the proper ISP, that is the
ISP that is being tested.
4 The ISP’s provisioning server recognizes the CPE in the CPE database. Permission to
access the ISP network is granted to the CPE.
5 Once the CPE has received permission to access, the indication lights on the CPE stop
blinking and remain continuously lit. On the host computer attached to the CPE, you
should be able to access web sites.
Network management overview
This section provides an overview of the network management features. These features are
grouped into the following categories:
• Fault isolation
• Performance management
• Configuration management
• Accounting
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Fault isolation overview
This section describes the fault isolation features of the network.
Using SNMP server to receive and report trap information
The network access provider can use an SNMP management station. This station reports all
abnormal system conditions. Based on the severity of the event, the SNMP management
system issues visual, audio, email and paging alerts.
Using Syslog to receive system information
The base stations and CPEs use Syslog to record system information to a remote Syslog
server for processing. Network access providers configure which remote server will handle
the Syslog messages.
The following levels of Syslog messages are supported: emergency, error, warning, notice, and
debug.
Using the AP server interface to monitor base station and
ISP network activity
The network access provider can monitor network activity and diagnose network problems
by using the AP server interface. This web-based interface allows service providers to
monitor base station statistics such as the records that were successfully handled by the base
station and how many requests for network access that the base station received.
Information about specific ISPs and how many requests for network access have been
recorded for a specific ISP also appears in the AP server interface.
Network access providers can see detailed log files for all CPEs that were allowed network
access and for CPEs that were denied network access. Details in the log files include the date
of the network registration request, the base station with which the CPE is registered, and
how many hosts the CPE is allowed to serve.
For more information about this feature, refer to “Monitoring ISPs and base stations” on
page 3-25.
Remote CPE diagnostics
For CPEs, ISPs can use the provisioning server interface to show information about CPEs
such as their serial number, the host computers they serve, the IP addresses assigned to the
host computers, and the base station that serves the CPE.
The provisioning server interface allows ISPs to establish an SNMP session with a specific
CPE, in order to retrieve diagnostic information from the CPE. For more information about
this feature, refer to the guide “Configuring and Monitoring the ISP Network”.
Network access providers can also use the ElementManager or other SNMP tool to access
information about a particular CPE.
7-77
Performance management overview
This section describes the performance management features of the network.
Using SNMP features to monitor network activity
The base station runs an SNMP agent supporting MIB-II and a NextNet Wireless enterprise
MIB. The SNMP agent allows a standard way of managing the Expedience system.
The NetManage Element Management system (NetManage EMS) provides a complete set of
management tools that allow network access providers to configure, manage, monitor and
report on elements that make up their network. This tool, based on SNMPc, is customized
for the Expedience network.
Alternatively, network access providers can use any SNMP interface (such as OpenView/
Netview) to perform system configuration and management tasks.
For CPEs, ISPs can use the provisioning server interface to show information about CPEs
such as their serial number, the host computers they serve, the IP addresses assigned to the
host computers, and the base station that serves the CPE.
Configuration management overview
This section describes features that help you configure devices on your network.
Using Telnet, terminal session, or web interface to
configure and monitor base stations
In addition to using an SNMP interface to configure the base station, network access
providers can use Telnet, a terminal session, or a web interface with the base station to view
and change base station settings.
In addition to many operating system parameters that can be configured, the network access
provider can display device statistics such as downlink and uplink traffic, buffer information,
and the number of CPEs communicating with a base station.
For more information about these features, refer to the user guide “Using the NextNet
Operating System (NNOS)”.
Using FTP in network management
The network access provider can use FTP to transfer files to a device, in order to maintain the
operating system on the device. FTP is also used for over-the-air upgrades for CPEs.
Accounting feature overview
This section describes a feature of the network that helps you bill the ISPs for their use of
your network.
Managing billing information
Network access providers can use network generated records about the number of CPEs that
exist on an ISP’s VLAN.
The records contain information about the total number of known CPEs on the ISPs VLAN,
as well as the service level agreement assigned to the CPEs. Using this information, the
network access provider can bill the ISP for network use according to the business
relationship with the ISP.
7-78 C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
A
P P E N D I X
GPS STATUS CODES
CHAPTER0
Appendix overview
This appendix describes codes that the GPS can generate. These codes are displayed on a
hand-held device manufactured to work with the GPS. Use these codes to determine if the
time output of the GPS is valid.
Table A.1 GPS status codes and meaning
Code
Status
Meaning
10
11
12
13
DOING_FIXES
GOOD_1SV
APPX_1SV
NEED_TIME
NEED_INITALIZATION
PDOP_HIGH
BAD_1SV
0SVs
1SV
2SVs
3SVs
NO_INTEGRITY
DCORR_GEN
OVERDET_CLK
Receiver is navigating
Receiver is limiting using one satellite
Approximate time
Start-up
Start-up
Dilution of precision too high
Satellite is unstable
No satellites usable
Only 1 satellite usable
Only 2 satellites usable
Only 3 satellites usable
Invalid solution
Differential corrections
Overdetermined fixes
A-79
A-80 C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
A
P P E N D I X
SUPPORTED FREQUENCY RANGES
CHAPTER0
Appendix overview
This appendix provides reference information about the frequency ranges in which the
equipment can operate.
MMDS frequency range
MMDS stands for multichannel multipoint distribution service and is a system of transmitting
signals through microwave. MMDS represents frequencies in the 2.5 to 2.686 GHz band.
Although initially used to transmit video signals, MMDS has gone through regulatory changes
which allow licensees of the frequency range to engage in fixed, two-way digital
transmissions. The MMDS frequencies are ideally suited for broadband delivery of data,
voice, and Internet services.
Note that the MMDS band shares it range with the instructional television fixed service
(ITFS) band. ITFS makes up the A, B, C, D and G blocks. Each block contains 4 channels.
Blocks A through D occupy the contiguous space from 2500-2596 MHz and the G block
occupies space from 2644 to 2680 MHz, alternating every other channel with the H block.
Although the Federal Communication Commission (FCC) did not auction licenses for the
ITFS frequencies, operators often lease the ITFS frequencies. These leases are allowed as
long as the operator transmits up to 40 hours of educational programming per week.
Sometimes, MMDS is referred to as wireless cable.
B-81
B-82 C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
Frequency
(MHz)
2500
Channel
A1
B1
A2
2524
B2
A3
B3
A4
C1
2548
B4
ITFS
D2
D3
C4
D4
E1
F1
2596
13 14 15 16 17 18
C3
2572
10 11 12
D1
C2
F2
E3
F3
E4
F4
G1
H1
G2
H2
G3
H3
G4
ITFS & MMDS
2620
2644
2668
19 20 21 22 23 24 25 26 27 28 29 30 31
E2
MMDS
2690
3.3 GHz frequency range
The Expedience system operates in the 3.3 GHz frequency range. For more information
about channel assignments in this range, contact NextNet Wireless.
3.5 GHz frequency range
The Expedience system operates in the 3.5 GHz frequency range. For more information
about channel assignments in this range, contact NextNet Wireless.
B-83
B-84 C o n f i g u r i n g , I n s t a l l i n g , a n d U s i n g C a r r i e r I n f r a s t r u c t u r e
INDEX
AAA server See AP server
airlink
enabling, 4-38
alarm
triggered on CBR, 6-69
ancilliary equipment
housing requirements, 1-8
antenna
coaxial cable, 5-53
connector, 5-53
gain recommended, 1-8
installation tips, 5-55
lightning protection, 5-53
planning installation, 1-8
type used to transmit MMDS channels, B81
AP server
configuring, 3-16
defining users and administrators, 3-16
installing, 3-15
overview, 1-3
setting up redundant, 4-41
starting, 3-15
authority
definitions, 4-40
setting up local authority, 4-42
setting up remote authority, 4-41
AUX +48 VDC connector, 5-50
AUX ETHERNET connector, 5-50
cabinet
Ethernet cable connection, 6-72
cable
coaxial cable, 5-53
Ethernet/power, 5-49
GPS inter-base station cable, 5-51, 6-70
GPS interface cable, 5-51, 6-70
serial interface, 5-53
CBR
cell wiring diagram, 6-64
diagnostic cable, 6-71
Ethernet cable connection, 6-72
fuses, 6-72
grounding, 6-68
installation overview, 1-4
installing in cabinet, 6-62
LED locations and meaning, 6-69
overview, 1-2
power cable connectors, 6-71
power connectors, 6-66
power supply requirements, 6-65
wiring to cell, 6-63
cell wiring diagram
for CBR, 6-64
channel number
setting, 4-33
channels
in MMDS frequencies, B-81
coaxial cable, 5-53
jumpers recommended, 5-55
maximum signal loss allowed, 5-55
configuration parameters
setting before deploying base station, 4-33
connector
data, 5-48
Ethernet, 5-48
GPS, 5-51
ISP Ethernet in TVS module, 5-50
power, 5-48
serial interface, 5-53
TVS module, 5-50
connectors
supported by base station, 5-47, 6-70
CPEs
how access is granted, 4-40
backbone network
connecting to, 5-57, 6-74
bandwidth
increasing on the downlink, 4-35
base station
connecting to TVS module, 5-50
connectors, 5-47, 6-69, 6-70
daisy chaining within cell, 5-57, 6-70
mounting, 5-54
power, 5-57, 6-65
setting configuration parameters, 4-33
base stations
starting term session, 3-26
battery backup connector
CBR, 6-66
BTS
installation overview, 1-5
Index-85
D
daisy chain cable see GPS Inter-base station
cable
daisy-chaining base stations, 5-57, 6-70
DHCP server equipment, 1-8
diagnostic cable
connections, 6-71
documentation
finding additional, preface-xiv
equipment
provided by service providers, 1-7
Ethernet
LED indicator, 6-69
Ethernet/power cable, 5-49
function of wires within, 5-49
splitting, 5-50
Expedience system
obtaining technical support for, preface-xvi
fuses
CBR, 6-72
replacing, 6-73
lightning protection, 1-8, 5-55
antenna, 5-53
supplied through TVS module, 5-50
links
selecting, 2-12
local authority
setting up, 4-42
LOS requirement elimination, 1-1
MMDS frequency range
channels, B-81
mounting
brackets, 5-54
template, 5-54
network access
setting up for CPEs, 4-40
NNOS web interface
setting base station configuration
parameters, 4-33
GPS
components of, 5-56
connecting to base station, 5-56
connector, 5-51
daisy-chained base stations, 5-57, 6-70
determining validity of output, A-79
exposure requirements, 5-56
interface cable, 5-51, 6-70
mounting pole and socket, 5-56
powering, 5-56
status codes, A-79
TDD impact, 1-7
time pulse generated, 5-56
used to generate time signal, 4-42
GPS inter-base station cable, 5-51, 6-70
grounding
CBR, 6-68
Hyperterminal
using to configure base station, 4-28
indoor/outdoor base station
overview, 1-2
inter-base station cable, 5-51, 6-70
ISPs
defining names, 3-22
power supply
for CBR, 6-65
provisioning server
user interface
New User page, 3-20
rack
attaching switch and power supply, 6-62
remote authority
setting up, 4-41
RS-232 cable, 4-28
serial interface
cable, 5-53
connector, 5-53
set airlink channel, 4-33
set airlink downlink power, 4-34
set airlink state, 4-38
set downlink bias, 4-35
SNMP server equipment, 1-8
SNMP session
setting base station configuration
parameters, 4-33
subscribers
typical of the Expedience system, 1-1
Syslog
setting up options, 4-39
Index-86 Configuring, Installing, and Using Carrier Infrastructure
T
TDD, 4-42
technical support, preface-xvi
telnet access to base station, 4-28
telnet session
setting base station configuration
parameters, 4-33
terminal emulation
access to base station, 4-28
connection settings, 4-28
setting base station configuration
parameters, 4-33
terminal emulation connection
settings, 4-28
time
setting up on base station, 4-42
time signal
external, 4-42
internal, 4-42
transmit power level of base station, 4-34
TVS module, 1-5
connectors, 5-50
typographical conventions
overview, preface-xv
UPS
sizing considerations, 5-57, 6-67
weatherproof housing requirements, 1-7
zones
defining, 3-21
Index-87
Index-88 Configuring, Installing, and Using Carrier Infrastructure

---

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