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Teklogix 9150 Wireless Gateway User Manual Chapter 4 Base Station Configuration

Teklogix 9150 Wireless Gateway User Manual 45
BASE STATION CONFIGURATION 4
4.1 Overview................................47
4.2 Interfaces................................49
4.2.1 TekLAN Parameters....................49
4.2.1.1 Radio.........................50
4.2.1.2 Wireless LAN Parameters..............52
4.2.2 Narrow Band Radio Parameters . . . . . . . . . . . . . .53
4.2.2.1 Polling Protocol Parameters . . . . . . . . . . . . .56
4.2.2.2 Radio Parameters . . . . . . . . . . . . . . . . . .59
4.2.2.3 Radio Channels . . . . . . . . . . . . . . . . . . .60
4.2.2.4 TRX7370 Radio Card Parameters . . . . . . . . . .60
4.3 Hosts..................................63
4.4 Main Host Menu............................65
4.4.1 General Host Options...................66
4.4.2 9010 / TCP/IP . . . . . . . . . . . . . . . . . . . . . . .67
4.4.2.1 Emulation Options. . . . . . . . . . . . . . . . . .67
4.4.2.2 Protocol Options And Function Key Mappings . . .68
4.4.3 9010 / Serial . . . . . . . . . . . . . . . . . . . . . . . .68
4.4.3.1 Emulation Options. . . . . . . . . . . . . . . . . .69
4.4.3.2 Protocol Options: Serial Line . . . . . . . . . . . .69
4.4.3.3 Protocol Options: 9010 Protocol . . . . . . . . . .70
4.4.3.4 Function Key Mappings . . . . . . . . . . . . . . .70
4.5 Base Stations..............................71
4.6 Radio Link Features..........................72
Teklogix 9150 Wireless Gateway User Manual 47
Chapter 4: Base Station Configuration
Overview
4.1 Overview
The 9150 Wireless Gateway can operate as a base station, facilitating communica-
tions between terminals and wireless base stations and a Teklogix 9400 or 9300
Network Controller, or 9140 Wireless Gateway (as a mini-controller) with a range
of host platforms. Alternatively, the network controller can be a host running a
Teklogix SDK (handler). The 9150 can also act as a slave base station to a 9140 on
the network. As a base station, the 9150 uses the Wireless LAN (Wlan) or Adaptive
Polling/Contention RF protocols.
Note: The 9150 main parameters should first be set up as described in Chapter 3:
“9150 Main Configuration” For details on the RF protocols, see page 8.
Figure 4.1 9150 Base Station Configuration
9150
ETHERNET
TCP/IP
9150
9140
8055 Vehicle-Mount
9400
7030 Hand-Held
SERIAL
Wireless Gateway
Network Controller
Wireless Gateway
RF Terminal
RF Terminal
Wireless Gateway
HOST
Chapter 4: Base Station Configuration
Overview
48 Teklogix 9150 Wireless Gateway User Manual
For operation as a base station, the parameters in the Base Station Configuration
pages on the Configuration Main Menu screen should be set appropriately, as
described in the sections that follow. In addition, the appropriate radio parameters
must be applied. These are found in the Interfaces pages for TekLAN and Narrow
Band radios. See pages 49 and 53, respectively.
Figure 4.2 Overview Of Base Station Configuration Menus
Teklogix 9150 Wireless Gateway User Manual 49
Chapter 4: Base Station Configuration
Interfaces
4.2 Interfaces
4.2.1 TekLAN Parameters
The pull-down menu shown for the Interfaces option in the 9150 Configuration
Main Menu page indicates which interfaces have been detected in use. Entering the
“Configure” dialog box for “Slot A: TekLAN Card”, opens the parameters page for
TekLAN, which presents both the radio and Wlan parameters.
Figure 4.3 Overview Of TekLAN Menus
Chapter 4: Base Station Configuration
TekLAN Parameters
50 Teklogix 9150 Wireless Gateway User Manual
4.2.1.1 Radio
Radio Type
The type of PC radio card installed on the 9150 is dependent on your wireless net-
work. This parameter should be set to the installed radio. The radios for TekLAN are
the TekLAN 902 MHz DS Spread Spectrum, and the TekLAN 2.4 GHz DS
Spread Spectrum.
Important: If changing radio types in the 9150, DO NOT “hot swap” the PC
cards: turn the 9150 off before changing the radio. Following this,
when changing the Radio Type parameter, the unit must be powered
OFF and ON again (“cold” rebooted). Rebooting with the Reboot
Unit option will not implement the radio parameter change.
Data Rate
This parameter determines the data (baud) rate for the radio channel. This is a
decimal value in bits per second. The acceptable value for the Data Rate parameter
differs depending on the type of radio installed in the 9150.
•TekLAN 902 MHz DS SS: 122 kbps.
•TekLAN 2.4 GHz DS SS: 1 Mbps.
Teklogix 9150 Wireless Gateway User Manual 51
Chapter 4: Base Station Configuration
TekLAN Parameters
Channel n Enabled
These parameters are used to enable ( √ ) or disable a channel. The number of chan-
nels available is determined by the type of radio installed. See “PC Card Radios” on
page 145 for the number of available channels for each radio type.
Active Channel
This parameter determines the current default radio channel.
Range
The federal agencies, Industry Canada and the Federal Communications Commis-
sion in the United States, as well as other country-specific agencies world-wide,
regulate the use of radio frequencies to ensure that communication conflicts are
avoided. See “PC Card Radios” on page 145 for the assigned frequencies for each
radio type.
The Range parameter determines which channels can be enabled and is set accord-
ing to the approved frequency range in the country where the system is installed.
The TekLAN 902 MHz radio is only assigned the 902 MHz frequency. For the
TekLAN 2.4 GHz radio, the frequency range and the associated channels and
countries are assigned as follows:
Table 4.1 Frequency Range – TekLAN 2.4 GHz Spread Spectrum (TRX7425)
Enable Card
This parameter enables the PC card ( √ ). The card may be disabled temporarily
when, for testing purposes, it is required that there be no radio interference.
Auto Startup
This parameter enables ( √ ) polling immediately when the 9150 is rebooted. If Auto
Startup is disabled, the 9150 will wait until polling is initialized from the network
controller. When the 9150 is operating as a Wlan base station under a network con-
troller, this parameter should be disabled.
Country Range Channels Available
For testing purposes only. 2412-2462 1 to 6
Canada, U.S., U.K. 2422-2462 2 to 6
Australia 2422-2442 2 to 4
Chapter 4: Base Station Configuration
TekLAN Parameters
52 Teklogix 9150 Wireless Gateway User Manual
4.2.1.2 Wireless LAN Parameters
The Wlan protocol can only be used with spread spectrum radios.
Important: If your system is using the Wlan protocol, make sure that Operate in
Cellular Mode is enabled (see page 72) in the Radio Link Features
sub-menu and that cellular mode is also set on the 9400/9300
Network Controller.
Base Number
This parameter is used to assign a unique address to each base station. As the termi-
nals move from one base station to another, this address is transmitted by the base
stations to the terminals, identifying each 9150 on a multiple base station system.
The allowable range of base station numbers is 1 to 64.
Timeout
This value is used to adjust Wlan performance and should be set to 10.
Max Priority
This value is used to adjust Wlan performance and should be set to 20.
Teklogix 9150 Wireless Gateway User Manual 53
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
Base Priority (TekLAN 2.4 GHz)
The Base Priority parameter determines the number of priority transmit slots
reserved for each base station. The allowable range for this parameter is 0 to 100.
For optimal performance, this parameter should be set to a value of 2.
Message Duration (TekLAN 2.4 GHz)
This parameter controls the duration of transmit slots to optimize communications
and decrease the likelihood of collisions. A Message Duration value of 1
translates into a slot duration of 130 micro seconds. The allowable range for this
parameter is 2 to 200. For optimal performance, this parameter should be set to 15.
Offline Timeout
This parameter determines the time in minutes that a terminal is allowed to be inac-
tive before the 9150 declares it offline. An offline terminal is still considered part of
the system. Messages to offline terminals are queued at the 9150. The terminal
remains offline until it transmits any message. Values for this parameter range from
0 to 100. If the parameter is set to 0, terminals are never declared offline.
4.2.2 Narrow Band Radio Parameters
The pull-down menu shown for the Interfaces option on the 9150 Configuration
Main Menu page indicates which interfaces have been detected in use. For the selec-
tion “Slot A: Teklogix Narrowband”, entering the “Configure” dialog box will open
the parameters pages for the TRX7370 Narrow Band PC card radio. These pages list
the polling protocol and radio parameters, and show the radio card’s permanent
communications settings.
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
54 Teklogix 9150 Wireless Gateway User Manual
Figure 4.4 Overview Of Teklogix Narrow Band Menus
Teklogix 9150 Wireless Gateway User Manual 55
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
Enable Card
This parameter enables the PC card ( √ ). The card may be disabled temporarily
when, for testing purposes, it is required that there be no radio interference.
Important: If changing radio types in the 9150, DO NOT “hot swap” the PC
cards: turn the 9150 off before changing the radio.
Auto-Startup
This parameter enables ( √ ) polling immediately when the 9150 is rebooted.
If Auto Startup is disabled, the 9150 will wait until polling is initialized from the
network controller.
Shared Channel
Shared Channel is only used in Holland to accommodate government requirements.
When enabled ( √ ), it imposes timing restrictions for polling. Every 2 seconds of
polling is followed by 0.5 seconds of silence—no polling occurs.
Further, if another carrier is detected on the channel, the 9150 will cease radio trans-
missions on that channel until the path is clear.
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
56 Teklogix 9150 Wireless Gateway User Manual
4.2.2.1 Polling Protocol Parameters
Number of Poll Windows
This parameter defines the number of poll windows the 9150 will use. The value
assigned to this parameter is dependent on the number of terminals and the radio
link protocol used.
Table 4.2 indicates how the value assigned to the Number of Poll Windows parame-
ter is determined.
Table 4.2 Number Of Poll Windows – Cellular Protocol
Size of Poll Windows
The value assigned to this parameter determines the largest message that can be
passed between the 9150 and the terminal in a normal poll window. The window
size can be adjusted to accommodate anywhere from 4 to 32 characters.
Number of Terminals Minimum # of Windows
1-16 2
17-81 3
82-256 4
Teklogix 9150 Wireless Gateway User Manual 57
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
Larger windows increase the polling period and can increase the response time.
Smaller windows increase the number of message and long message polls, and can
also increase the response time.
Important: In “Cellular” mode, the minimum value for this parameter is 8.
Maximum Message Segment Size
This parameter determines the largest single message that can be passed to a
terminal in message mode or from a terminal in long message mode. In a 9150 base
station, the value entered in this parameter must be greater than or equal to the value
entered in the network controller or 9150 mini-controller. The range of this parame-
ter is between 32 and 116 characters. (Longer messages are broken into several
packets.) The default value is 100.
Number of Retries
This parameter determines how many times the 9150 attempts to resend a message
if an acknowledgement is not received from the terminal. (These retries do not
necessarily occur in consecutive polls because incomplete messages are returned to
the bottom of the message queue.) After all retries have been exhausted, the terminal
is declared “offline”. The 9150 does not transmit any messages to the terminal until
the terminal declares itself “online”. The allowable values range from 1 to 7.
Collision Size
This parameter reduces the probability that random noise on the radio link will be
interpreted as a collision between terminals. Response time increases when the 9150
resolves collisions unnecessarily.
Collision Size places an upper limit on the number of characters that are received
prior to the receipt of an error message (CRC, CD lost, etc.). If eight is the value of
this parameter, eight or less characters followed by an error message appearing over
the radio link are considered noise. If there are more than eight characters, it is con-
sidered a collision. Acceptable values range from 3 to 15.
Free Window Factor
The value entered in this parameter determines if “free window mode” will be used.
In free window mode, all terminals transmit in the free poll window instead of the
window to which they are normally assigned.
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
58 Teklogix 9150 Wireless Gateway User Manual
Entering a value of 0 (zero) in this parameter disables free window mode. Increas-
ing the value of this parameter increases the likelihood of a message being transmit-
ted in the free window.
Message Mode Limit
This parameter defines an upper limit to the number of messages that must be
queued for transmission before message mode polling starts. Accepted values range
from 0 to 7, where 0 disables message mode.
Note: The number of terminals and past events are also part of the algorithm
that determines whether or not to start message mode.
Callsign Period
A call sign is periodically transmitted as an audible Morse code signal. This
parameter specifies the interval in minutes between call sign transmissions.
Acceptable values range from 0 to 60. The federal agencies, Industry Canada and
the Federal Communications Commission in the United States, require that each
system transmit its own identification call sign every 15 minutes.
In countries where a call sign is not required, setting this parameter to 0 prevents the
transmission of any call signs, allowing for shorter poll time-outs in terminals and
faster channel switching.
Callsign String
This string can be a maximum of 10 characters long. All characters are either
numbers or letters. The prefix “DE” (from) is added to the beginning of the transmit-
ted call sign.
Teklogix 9150 Wireless Gateway User Manual 59
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
4.2.2.2 Radio Parameters
Sync Delay
Important: This parameter should not be changed from its factory setting
without a clear understanding of the timing of the radio protocol.
Sync Delay specifies the delay between the time of the base station transmission and
the first response window, measured in milliseconds. The value assigned to this
parameter must be compatible with other base stations and terminals in the system.
The default setting of 22 is based on the requirements of a 2 level modulation
narrow band radio, operating at 9600 baud.
Remote Txon
Remote Txon accommodates the turn on time of the radio in the base station.
It specifies the number of fill characters sent to the radio before real data is output.
Since this parameter is based on character times, the number is dependent on the
radio link baud rate. When the baud rate is changed, this parameter automatically
changes to the correct value.
The value assigned to the Remote Txon parameter must be consistent across all
terminals and base station equipment.
Important: This parameter should not be changed from its factory setting
without an understanding of the timing of the radio protocol.
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
60 Teklogix 9150 Wireless Gateway User Manual
4.2.2.3 Radio Channels
Active Channel
This parameter determines the operating radio channel of the 9150. The channel
selected must be an enabled channel. Refer to Enabled Channels, below, for details.
Enabled Channels
This parameter is used to enable ( √ ) or disable up to 20 channels – the maximum
number of channels supported by the TRX7370 radio. Enabling a channel allows the
channel to be set to an operating channel (Active Channel) and also makes the
channel available for channel searching. If, for example, the operating channel is 1
and all other channels are enabled, terminals may roam through all 20 channels.
Note that the Enabled Channels menu only displays channels that have been config-
ured with frequencies. See page 62 for the list of associated frequencies.
4.2.2.4 TRX7370 Radio Card Parameters
Entering the “Get Card Parameters” dialog box will open the list of General, Fre-
quencies, and Tuning Values parameters for the TRX7370 Narrow Band PC card
radio. These manufacturer’s settings are not configurable. The settings are shown on
pages 62 and 63.
Teklogix 9150 Wireless Gateway User Manual 61
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
Chapter 4: Base Station Configuration
Narrow Band Radio Parameters
62 Teklogix 9150 Wireless Gateway User Manual
General Parameters
Frequencies
Teklogix 9150 Wireless Gateway User Manual 63
Chapter 4: Base Station Configuration
Hosts
Tuning Values
4.3 Hosts
The drop-down menu in this option shows the host names present on the system. Up
to six hosts can be supported. A “host” must be configured for each master network
controller, TSDK host, or master base station that communicates with the 9150.
Opening the “Configure” dialog box for a selected host lists the parameters that can
be modified or deleted for that host. New hosts can be added by selecting “[#]
Create New” in the drop-down menu before entering the “Configure” dialog box.
Chapter 4: Base Station Configuration
Hosts
64 Teklogix 9150 Wireless Gateway User Manual
Name
This parameter indicates the assigned host name. The host name also appears on the
RF terminal when switching between hosts in a multiple-host environment.
Note: The name must not contain space characters.
Enabled
The Enabled option must be turned on ( √ ) for terminals to communicate with
this host.
Emulation and Protocol
This drop-down menu provides a list of host emulations and communication proto-
cols supported by the 9150. The supported emulations with their respective
protocols are:
• 9010/ TCP/IP (See page 67 for configuration parameters).
• 9010/ Serial (See pages 68 to 70 for configuration parameters).
• 3274/Telnet (See pages 84 to 98 for Configuration Parameters).
• 5250/Telnet (See pages 99 to 112 for Configuration Parameters).
• ANSI/Telnet (See pages 113 to 121 for Configuration Parameters).
When the 9150 acts as a base station, it uses the 9010 protocol (a proprietary
protocol developed by Teklogix) with either a TCP/IP or serial connection to com-
municate with a 9400 or 9300 Network Controller, or a host using a Teklogix
Software Development Kit (TSDK). This protocol uses TESS (Teklogix Screen
Subsystem) or ANSI data streams to communicate with terminals. For detailed
information, please refer to the appropriate Teklogix User Manual for: 9400 or 9300
Network Controller, TSDK, TESS or ANSI.
When the 9150 acts as a mini-controller, it uses the 3274 and 5250 emulation
protocols to communicate with IBM hosts, or the ANSI emulation protocol to com-
municate with ANSI hosts. For detailed information on configuring the 9150 as a
mini-controller, please refer to Chapter 5: “Mini-Controller Configuration”.
Protocols are the methods by which terminals communicate with host computers
over various physical media such as Ethernet, Token Ring, and serial connections, as
well as radio-link connections. The 9150 supports the TCP/IP protocol.
Teklogix 9150 Wireless Gateway User Manual 65
Chapter 4: Base Station Configuration
Main Host Menu
Terminal Range
The values entered in this parameter designate the first and last terminals in the
range of terminals that will communicate with the host. These terminal numbers are
mapped to this particular host.
4.4 Main Host Menu
When you choose an existing host from the Hosts listbox and then select the Config-
ure button, the 9150 displays the Host Menu.
Figure 4.5 Overview Of Host Menus For 9010 / TCP/IP
Chapter 4: Base Station Configuration
General Host Options
66 Teklogix 9150 Wireless Gateway User Manual
The Host Menu has four configuration sub-menus:
“General Host Options”
When you select this sub-menu, the 9150 displays the General Options page
for the host.
“Emulation Options”
When you select this sub-menu, the 9150 displays the Emulation Options
page for the host. This page may vary depending on the type of emulation and
protocol selected for the host.
“Protocol Options” (not applicable to 9010/TCP/IP emulation)
When you select this sub-menu, the 9150 displays the Protocol Options page
for the host. This page may vary depending on the type of emulation and pro-
tocol selected for the host.
“Function Key Mappings” (3274, 5250, ANSI emulations only)
When you select this sub-menu, the 9150 displays the Function Key Mapping
page for the host. This page may vary depending on the type of emulation and
protocol selected for the host.
There is also a Main Menu button. When you select this button, the 9150 displays
the Configuration Main Menu (see page 48).
4.4.1 General Host Options
In this screen, you can select general options for the host connection. The host con-
nection may also be deleted.
Name
This parameter allows you to enter a name for the new host.
Teklogix 9150 Wireless Gateway User Manual 67
Chapter 4: Base Station Configuration
9010 / TCP/IP
Emulation and Protocol
This parameter allows you to select the emulation and protocol to be used for the
connection to this host. As a base station, the 9150 can use either 9010/ TCP/IP or
9010/SERIAL, depending on the connection to the network controller or host.
Terminal Range
This parameter allows you to specify the range of terminals which will communi-
cate with this host. The left-hand textbox contains the lowest terminal number which
is allowed to communicate with the host; the right-hand textbox contains the highest
terminal number. Terminal numbers may range from 1 to 3840.
4.4.2 9010 / TCP/IP
4.4.2.1 Emulation Options
Refrain from sending On-line & Off-line messages
If this parameter is enabled ( √ ), the 9150 base station does not notify the host if
the status of a terminal changes between offline and online. If this parameter is
disabled, the 9150 does notify the host regarding any terminal status changes.
Chapter 4: Base Station Configuration
9010 / Serial
68 Teklogix 9150 Wireless Gateway User Manual
4.4.2.2 Protocol Options And Function Key Mappings
These parameters are not applicable to the 9010 / TCP/IP emulation.
4.4.3 9010 / Serial
Figure 4.6 Overview Of Host Menus For 9010 / Serial
Teklogix 9150 Wireless Gateway User Manual 69
Chapter 4: Base Station Configuration
9010 / Serial
4.4.3.1 Emulation Options
Refrain from sending On-line & Off-line messages
If this parameter is enabled ( √ ), the 9150 base station does not notify the host if
the status of a terminal changes between offline and online. If this parameter is
disabled, the 9150 does notify the host regarding any terminal status changes.
4.4.3.2 Protocol Options: Serial Line
Line Protocol
This listbox specifies the serial line protocol used on this host connection.
Chapter 4: Base Station Configuration
9010 / Serial
70 Teklogix 9150 Wireless Gateway User Manual
The three available choices are STX/ETB, LF/CR, and DEL/LF. Each of these
three choices specifies the start and end characters that delimit the start and end of
data on the serial link to the host. These characters are:
Note: For communication to Teklogix handlers or SDKs, always use STX/ETB.
LF/CR and DEL/LF are used in third-party handlers.
The default setting is STX/ETB.
Use Cyclic Redundancy Check (CRC)
If this parameter is enabled ( √ ), the 9150 base station uses a CRC checksum on the
data sent over the serial line to the host.
4.4.3.3 Protocol Options: 9010 Protocol
Use NS/NR
If this parameter is enabled ( √ ), the 9150 base station uses NS/NR protocol for this
serial host connection.
Note: Only use NS/NR with the STX/ETB protocol. Teklogix recommends that
this be enabled when possible.
Full Duplex Mode
If this parameter is enabled ( √ ), the 9150 base station uses full-duplex communica-
tion on this serial host connection.
4.4.3.4 Function Key Mappings
These parameters are not applicable to the 9010/Serial emulation.
Character Code Meaning Hex Value
STX Start of Text 01
ETB End of Text Block 17
LF Line Feed 0A
CR Carriage Return 0D
DEL Delete 7F
Table 4.3 Serial Line Protocol Character Codes
Teklogix 9150 Wireless Gateway User Manual 71
Chapter 4: Base Station Configuration
Base Stations
4.5 Base Stations
These options and parameters allow you to configure the 9150 as a master base
station connected to up to 32 slave 9150 and 9140 base stations over an Ethernet or
Token Ring network. The master 9150 is connected to a 9400 or 9300 Network
Controller, or up to six hosts running TSDK (Teklogix Software Development Kit).
From the Base Stations option under Base Station Configuration (see Figure 4.2 on
page 48), entering “Configure” will open the “Configure New Base Station” page,
which will enable you to add a new slave base station to the system or change the
parameters on an existing slave base station.
Name
The name entered in this parameter is used as an alternate way of identifying the
IP address of a slave base station.
IP Address
This parameter provides the corresponding IP address for the slave base station.
The IP Address must be a unique value so that each slave base station can be iden-
tified on the network. The acceptable value ranges from 0.0.0.0 to 239.255.255.255.
The default value for the IP port is 16100.
Protocol
IAC/EOR (TCP/IP) is the default protocol for the Ethernet or Token Ring connection.
Chapter 4: Base Station Configuration
Radio Link Features
72 Teklogix 9150 Wireless Gateway User Manual
Message Size
Message Size determines the largest single message that can be passed to a
terminal. The range of this parameter is between 32 and 380 characters. (Longer
messages are broken into several packets.) For polling protocol base stations, the
upper limit is 116.
Auto-Startup
When this parameter is enabled ( √ ), the slave base stations will start polling when
the master 9150 boots up. When Auto-Startup is disabled, the base stations will not
start polling until they receive a start polling command from the host.
4.6 Radio Link Features
From the Radio Link Features option under Base Station Configuration (see
Figure 4.2 on page 48), entering “Configure” will open the “Radio Link Features”
page for the polling and cellular parameters.
Operate in Cellular Mode
To operate as a Wlan base station, this parameter should be enabled ( √ ). For
further information see “Wlan Protocol” on page 8.
Note: The 9400 or 9300 Network Controller must also be set to cellular mode.
Teklogix 9150 Wireless Gateway User Manual 73
Chapter 4: Base Station Configuration
Radio Link Features
Poll ID
In Wlan protocol, this is a unique identifying number set only in a 9150 master base
station, 9150 mini-controller or a network controller, which is used in the poll
header when polling terminals. Poll ID is set by Teklogix personnel.
In Adaptive Polling/Contention protocol for narrow band radios, Poll ID is used to
assign a unique address to each base station. As the terminals move from one base
station to another, this address is transmitted by the base stations to the terminals,
identifying each 9150 in a multiple base station system.
Polling Protocol Terminal Timeout
This parameter determines the time in minutes that a terminal can be inactive before
the 9150 declares it offline. Before this happens, the terminal will be declared
offline by the Percent Polling Protocol Terminal Timeout parameter (see below).
After the terminal is removed from the system, it will need to re-initialize in order to
communicate with the 9150. This parameter reduces the overhead on the radio link
caused when terminals which are not communicating are supported. The allowable
values range from 1 to 240.
Note: This parameter is not relevant for Wlan.
Percent Polling Protocol Terminal Timeout
This parameter determines the time that a terminal is allowed to be inactive before
the 9150 declares it offline. This time is expressed as a percentage of the Polling
Protocol Terminal Timeout parameter, above. For example, if the Polling Protocol
Terminal Timeout is 60, and this parameter is set to 75%, then the timeout would be
60 min x 75% = 45 minutes. An offline terminal is still considered part of the
system. Messages to offline terminals are queued at the 9150. The terminal remains
offline until it transmits an online message. Values for this parameter range from 50
to 90.
Direct TCP Connections for TekTerm
Enabling this parameter allows the TekTerm program resident in Teklogix
terminals to connect directly to the 9150, when it is acting as a base station to
a host via TCP/IP.

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