Alvarion Technologies SUR-24 Indoor Subscriber Unit User Manual

Alvarion Ltd. Indoor Subscriber Unit

UserManual.wiki >

Alvarion Technologies >

SUR-24 User Manual >

Contents

User Manual

FCCID: LKT-SUR-24BreezeACCESS IIIndoor Subscriber UnitsSU-R SeriesInstallationManualApril, 2001Cat. No. 213

Front MatterSU-R Installation Manual iii BreezeACCESS II SeriesBreezeCOM shall not be liable to any person for any special or indirect damages, including, but notlimited to, loss of profits or revenues, loss of use or damage to any associated equipment, cost ofcapital, cost of substitute products, facilities or services, downtime costs or claims resulting from anycause whatsoever arising from or in any way connected with the manufacture, sale, handling, service,repair, maintenance or use of the products. In no event shall the company’s liability exceed the purchaseprice denoted on the invoice.Electronic Emission NoticeThis device complies with Part 15 of the FCC rules. Operation is subject to the following twoconditions:1. This device may not cause harmful interference.2. This device must accept any interference received, including interference that may cause undesiredoperation.FCC Radio Frequency Interference StatementThis equipment has been tested and found to comply with the limits for a class B digital device, pursuantto Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmfulinterference when the equipment is operated in a residential environment notwithstanding use incommercial, business and industrial environments. This equipment generates, uses, and can radiate radiofrequency energy and, if not installed and used in accordance with the instruction manual, may causeharmful interference to radio communications.FCC Radiation Hazard WarningTo comply with FCC RF exposure requirements in section 1.1307, a minimum separation distance 20cm(8 inches) is required between the antenna and all persons.Information to UserAny changes or modifications of equipment not expressly approved by the manufacturer could void theuser’s authority to operate the equipment.Safety ConsiderationsFor the following safety considerations, “Instrument” means the BreezeACCESS Subscriber Unitcomponents.CautionTo avoid shock, do not perform any servicing unless you are qualified to do so.

Front MatterBreezeACCESS II Series iv SU-R Installation ManualLine VoltageBefore connecting this instrument to the power line, make sure that the voltage of the power sourcematches the requirements of the instrument.RadioThe instrument transmits radio energy during normal operation. To avoid possible harmful exposure tothis energy, do not stand or work for extended periods of time in front of its antenna. The long-termcharacteristics or the possible physiological effects of Radio Frequency Electromagnetic fields have notbeen yet fully investigated.

Table of ContentsBreezeACCESS II Series v SU-R Installation ManualTable of Contents1. Introduction _______________________________________________________ 12. Basic Installation ___________________________________________________ 22.1 Packing List ___________________________________________________ 22.2 Other Required Items___________________________________________ 22.3 Installation Overview ___________________________________________ 32.4 Installation Guidelines __________________________________________ 32.5 Wall Mounting the Unit _________________________________________ 52.6 Connecting the Antenna (A7 model) _______________________________ 52.7 Connecting the Unit to the Power Supply and to the CPE _____________ 53. Configuring System Parameters _______________________________________ 73.1 Getting Started with the Local Terminal ___________________________ 73.2 Configuring Basic Parameters____________________________________ 93.3 Reset Unit____________________________________________________ 114. Aligning the Antenna (A7 model) _____________________________________ 124.1 Aligning the Antenna Using the LEDs_____________________________ 124.2 Aligning the Antenna Using the Site Survey Menu __________________ 125. Maximum Data Rate Configuration ___________________________________ 146. Verifying Proper Operation __________________________________________ 156.1 Checking the LEDs ____________________________________________ 156.2 Verifying the Ethernet Connection _______________________________ 156.3 Verifying Data Connectivity_____________________________________ 166.4 Verifying Telephone Connectivity (units with voice support)__________ 167. Specifications _____________________________________________________ 17

Table of ContentsBreezeACCESS II Series vi SU-R Installation Manual7.1 Radio________________________________________________________ 177.2 Data Communication___________________________________________ 177.3 Voice Communication (units with voice support)____________________ 177.4 Configuration and Management _________________________________ 187.5 Interfaces ____________________________________________________ 187.6 Electrical ____________________________________________________ 187.7 Mechanical___________________________________________________ 187.8 Environmental ________________________________________________ 197.9 Standards Compliance, General _________________________________ 19Appendix A. Using Telnet_____________________________________ 21Appendix B: Basic Parameters_______________________________ 23

IntroductionSU-R Installation Manual 1 BreezeACCESS II Series1. INTRODUCTIONThis manual describes installation guidelines for BreezeACCESS II SU-R Subscriber Units.The BreezeACCESS Broadband Wireless Access system allows access service providers toprovide high-speed IP connectivity services to their subscribers. To support IP-based serviceseffectively BreezeACCESS systems employ wireless packet data switching technology.The BreezeACCESS II line of products uses Frequency Hopping Spread Spectrum radios thatoperate in Time Division Duplex (TDD) mode in the license free 2.4 – 2.5 GHz frequency range.The SU-R line of Subscriber Units comprises compact units that are designed for indoorinstallation. SU-R units are available in several models differing from each other in the type ofsupported data networks and availability of voice services as follows:• SU-R-8D units support up to 8 Ethernet workstations / PCs (8 MAC addresses).• SU-R-BD units provide a full bridge functionality supporting up to 512 MAC addresses.• SU-R-8D1V support up to 8 Ethernet workstations / PCs and have an interface to a standardtelephone set.SU-R units are available either with two 3 dBi omni antennas (A models) or with an indoorwall/window mountable 7 dBi UNI-7 antenna (-A7 models).Note: The information contained in this manual is applicable to BreezeACCESS SU-R-MMDSunits with software release 3.0 and up.

Basic InstallationBreezeACCESS II Series 2 SU-R Installation Manual2. BASIC INSTALLATION2.1 Packing ListThe SU-R units are shipped with the following units and accessories. The exact packing listvaries depending on system configuration and ordered equipment.• SU-R unit:⇒ SU-R-A with 2 omni antennas or⇒ SU-R-A7 unit• An SMA adapter (with SU-R-A7 units)• UNI-7 antenna with 3 m cable and a mounting kit (with the SU-R-A7 units)• A power supply• Wall mounting kit for the SU-R unit (two anchors and screws)• An Ethernet cable (straight)2.2 Other Required ItemsThe following items must be available for the installation• An Ethernet cable (crossed) if the unit should be connected to a hub (the straight Ethernetcable supplied with the unit is intended for connecting it directly to a PC or to a hub’s uplinkport)• A PC with terminal emulation program• A monitor cable* for configuration and testing via the Monitor interface• Installation tools and materialsItems marked with an asterisk (*) are available from BreezeCOM.

Basic InstallationSU-R Installation Manual 3 BreezeACCESS II Series2.3 Installation OverviewStandard installation involves the following steps:1. Verify that all components of the packing list, described in Section 2.1, are intact and verifyavailability of the required items listed in Section 2.2.2. Install the unit and antenna in optimal locations as described in Sections 2.4 and 2.5 and inthe instructions supplied with the antenna.Note: To avoid drilling unnecessary holes, it is recommended to verify good connectivity with thebase station prior to drilling holes in the locations intended for the SU-R unit and/or thedetached antenna.3. Connect the antenna to the unit as described in Section 2.6.4. Connect the power supply and the user’s equipment to the unit as described in Section 2.7.5. Configure the basic system parameters as described in Section 3.6. Align the antenna for optimal connectivity (A7 models) and configure the Maximum DataRate if applicable, as described in Chapters 4 and 5.7. Check the functionality of the unit as described in Chapter 6.2.4 Installation GuidelinesThis section describes the installation guidelines and the various considerations that must betaken into account when planning the installation.2.4.1 Location of the Unit• The unit can be placed on a desktop or a shelf, or can be attached to a wall.• The unit should be installed as neat as possible to the antenna (-A7 models). The RF cableconnecting the unit to the antenna should be as short as possible to guarantee minimum powerloss.

Basic InstallationBreezeACCESS II Series 4 SU-R Installation Manual• Keep the units well away from sources of heat, such as radiators, air-conditioners, etc.2.4.2 Location of the Antenna• Any physical object in the path between two units can cause signal attenuation. Commonobstructions are buildings and trees. If a unit’s antenna is installed indoors, the walls and/orwindows between the two sites are physical obstructions. If the antenna is positionedoutdoors, any buildings or other physical structure such as trees, mountains or other naturalgeographic features higher than the antenna and situated in the path between the two sites canconstitute obstructions.• Install indoor antennas as close as possible to a window (or wall if a window is notaccessible) facing the required direction. The UNI-7 antenna may also be attached to a fixedwindow. Avoid metal obstacles such as metal window frames or metal film anti-glarewindows in the transmission path. Install outdoor antennas high enough to avoid any obstacles,which may block the signal.• Position the antennas clear of metal furniture and away from moving metal objects such asmetal fans or doors.2.4.3 Antenna DiversityIn applications where no multipath propagation is expected, a single antenna is sufficient to ensuregood performance levels. However, in cases where multipath propagation exists, BreezeCOMrecommends that two antennas be used. This takes advantage of space diversity capabilities. Byusing two antennas per unit, the system can select the best antenna on a per-packet basis (everyseveral milliseconds).Multipath propagation is to be expected when there are potential reflectors between the AccessUnit and Subscriber Units. These reflectors may be buildings or moving objects such as airplanesand motor vehicles. If this is the case, the radio signal does not travel in a straight line, but isreflected or deflected off of the object, creating multiple propagation paths.When installing a single antenna, modify the transmit diversity option to either antenna 1 orantenna 2, according to the antenna being used.2.4.4 Antenna PolarizationAntenna polarization must be the same at either end of the link. In most applications, the preferredorientation is vertical polarization. Above-ground propagation of the signal is better when it ispolarized vertically. For integral omni antennas (A model), make sure that the antennas are

Basic InstallationSU-R Installation Manual 5 BreezeACCESS II Seriesextended upward vertically in relation to the floor to achieve vertical polarization. For thedetached UNI-7 antenna (A7 model) follow the instructions included with the antenna.2.5 Wall Mounting the UnitNote: To avoid drilling unnecessary holes, it is recommended to verify connectivity with the basestation prior to drilling holes in the locations intended for the SU-R unit and/or the indoorantenna.The template on the packaging box can be used to mark the locations of the screws on the wall(drill right through the markings on the box).After insertion of the anchors and screws, hang-on the unit on the two screws with the bottompanel (the side with the connectors) facing downward.In SU-R-A models with integral antennas, extend the antennas upward vertically in relation to thefloor to achieve vertical polarization.2.6 Connecting the Antenna (A7 model)1. Connect the special adapter to antenna port 1 (marked 1) on the side of the unit. Push theadapter carefully into the hole using the alignment markings on the adapter and the unit, andturn it 180 degrees to firmly lock it.2. Connect the antenna cable to the adapter. If you use a heavy cable, secure the cable so as toprevent applying excessive force on the adapter and connector.2.7 Connecting the Unit to the Power Supply and to the CPEThe unit operates on a power input of 5V DC, supplied by the power transformer included withthe unit.1. Plug the output jack of the power transformer into the DC input jack (marked DC IN)located on the bottom panel of the unit.2. Connect the supplied universal power transformer to a power outlet - 110/ 220VAC.

Basic InstallationBreezeACCESS II Series 6 SU-R Installation Manual3. Use a straight Ethernet 10BaseT cable to connect the Ethernet port (marked ETH) to a PC orto a hub’s uplink port. Use a crossed cable to connect to a hub.4. For units with voice support, use the standard cable connected to the telephone set toconnect the telephone to the telephone port (marked TEL).

Configuring System ParametersSU-R Installation Manual 7 BreezeACCESS II Series3. CONFIGURING SYSTEM PARAMETERSAfter completing the installation process, as described in the preceding sections of this manual,proceed with configuration of the basic system parameters.This manual covers the configuration of basic installation parameters. Refer to the AdministrationManual for information related to other parameters.Note: Optionally, the product can be configured using Telnet over the Ethernet port, after settingIP address. For further information, refer to Appendix B.3.1 Getting Started with the Local Terminal1. Connect one end of the Monitor cable to the Monitor jack (marked MON) on the bottompanel of the unit. Connect the second end of the cable to the COM port of the terminal. TheCOM port connector on the Monitor cable is a 9 pin D-type plug.2. Run a terminal emulation program (e.g., ProComm or Windows HyperTerminal) using thefollowing setup:Baud rate 9600Data bits 8Stop bits 1Parity NoneFlow Control Xon/XoffConnector Available Com Port3. Press Enter. The Select Access Level menu appears. Select the access level according toyour authorized access level. You will be requested to enter your password. After enteringthe correct password, press enter. The main menu appears (refer to Figure 3-1).Unit Type

Configuring System ParametersBreezeACCESS II Series 8 SU-R Installation ManualBreezeACCESS/SU-ROfficial Release Version – 3.0.2Release Date: Mon Oct 23 21:05:08 2000Main Menu=====================1 – Info Screens2 – Unit Control3 – Basic Configuration4 – Site Survey5 – Advanced Configuration>>>Figure 3-1. Main MenuThe appearance of the displayed Main Menu varies in accordance with the access level.• For users with read only access rights, only the Info Screens option is displayed. Users withthis access level cannot access the Unit Control, Basic Configuration, Site Survey andAdvanced Configuration menus.• For users with Installer access rights, the first four menu items (Info Screens, Unit Control,Basic Configuration and Site Survey) are displayed. Users with this access level cannotaccess the Advanced Configuration menu.• For users with Administrator access rights, the full Main Menu will be displayed. These userscan access all the menu items.SoftwareVersion No.

Configuring System ParametersSU-R Installation Manual 9 BreezeACCESS II SeriesOperate the monitor program as follows:• Type an option number to open/activate the option. You may need to press the Enter key insome cases.• Press the Esc key to exit a menu or an option.• You can log-out and exit the monitor program from the Main Menu by simultaneouslypressing the Ctrl and X keys. The session is terminated automatically, after a specific time ofinactivity determined by the Log-out Timer. The default value for the Log-out Timer is 5minutes.• Reset the unit after making configuration changes for the new values to take effect.• You can view the current parameters’ configuration by selecting 1 in the Main Menu toAccess the Info Screens menu, and than selecting 2 in the Info Screens menu to view the BasicConfiguration parameters.3.2 Configuring Basic ParametersThe following system parameters must be configured for each specific installation:• ESSID• IP Parameters: DHCP Client and/or IP Address, Subnet Mask and Default Gateway Address• Transmit AntennaNote: You must select Reset Unit in the Unit Control menu for the changes to take effect.Subscriber Units should be configured after the applicable Access Unit is operational.See Appendix C for more details on the basic parameters.

Configuring System ParametersBreezeACCESS II Series 10 SU-R Installation Manual1. From the main menu, type 3 to access the Basic Configuration menu.2. From the Basic Configuration menu, type 4 to access the ESSID selection screen. Enter therequired ESSID.3. Type D to access the DHCP Client menu. Type 1 to access the DHCP Options menu andselect the required option. If the selected option was other than Disable, type 2 to access theAccess to DHCP menu and select the required option.. If the DHCP Only option wasselected, go to step 7. Otherwise (if either the Disable or Automatic options were selected),perform steps 4-6.4. Type 1 to access the IP Address selection screen. Enter the required IP address.5. Type 2 to access the Subnet Mask selection screen. Enter the required subnet mask.6. Type 3 to access the Default Gateway Address selection screen. Enter the required defaultgateway address.7. Type G to access the Transmit Antenna selection screen. Enter the required selection. ForSU-R-A7 units with a single antenna connected to antenna port 1, select 1 - use antenna # 1.For SU-R-A units with two integral antennas, select 0 – use two antennas.

Configuring System ParametersSU-R Installation Manual 11 BreezeACCESS II Series3.3 Reset Unit1. From the main menu, type 2 to access the Unit Control menu.2. Type 1 to access the Reset Unit menu. Type 1 to reset the unit so that new configurationsettings are applied.Note: Should you make any mistakes during configuration or encounter any problems associatedwith system configuration parameters, you may configure the unit back to the factorydefaults, as follows:Type 2 in the Unit Control menu to access the Set Factory Defaults menu. Type in 2 (SetFactory defaults-Full) to load the default values. Reset the unit for the factory defaultsvalues to take effect.

Aligning the Antenna (A7 model)BreezeACCESS II Series 12 SU-R Installation Manual4. ALIGNING THE ANTENNA (A7 MODEL)When using high gain antennas with a narrow beam width, an alignment procedure is necessary inorder to optimize the quality of the link with the Access Unit.For a Subscriber Unit with a directional antenna, you can either use the LED indicators on thefront panel of the unit or view the Received Signal Strength Indication (RSSI) using the monitorprogram. In most installations, alignment using the LEDs is sufficient. The RSSI reading can beused when finer alignment is required (see 3.2).Note: Antenna alignment of the Subscriber Unit is possible only after the Access Unit you wish toassociate with is operational and the basic parameters were properly configured asdescribed in Section 3.2.4.1 Aligning the Antenna Using the LEDs1. The H (high), M (medium) and L (low) LEDs on the front panrel of the unit indicate thequality of the link. The higher the number of illuminated LEDs the better is the quality of thelink.2. Rotate the antenna left and/or right until you reach the point of maximal signal qualityreading on the H, M and L LEDs. Make sure that at all times, the front of the antenna facesthe general direction of the Access Unit. In some cases, e.g. when the unit is very close tothe base station you may need to tilt the antenna upward or downward.3. For proper operation, at least one (L) LED should be illuminated. If this is not possible,improve the link quality by placing the antenna at a higher point or in a different location.4. After the antenna is optimally aligned, secure the antenna to guarantee that it will remain inthe selected position.4.2 Aligning the Antenna Using the Site Survey Menu1. Start the Monitor program as described in Section 3.1.

Aligning the Antenna (A7 model)SU-R Installation Manual 13 BreezeACCESS II Series2. From the main menu, type 4 to access the Site Survey menu. Type 4 to start the ContinuousLink Quality Display. Each line in the display includes the number of frames that werereceived since the last measurement (total Rx) and the average RSSI for these frames.3. Rotate the antenna left and/or right (or tilt it upward/downward) until you reach the point ofmaximum RSSI reading. Make sure that at all times, the front of the antenna faces the generaldirection of the Base Station.4. For proper operation, the RSSI reading should be at least 38 units. When the maximumreading is less than 43 units, try to improve it by placing the antenna at a higher point or in adifferent location. For best performance it is recommended that the RSSI be higher than 65.5. Press the Esc key to stop the test.6. Secure the antenna to guarantee that it will remain in the selected position.

Maximum Data Rate ConfigurationBreezeACCESS II Series 14 SU-R Installation Manual5. MAXIMUM DATA RATE CONFIGURATION1. If the average RSSI reading using the Continuous Link Quality Display (see Section 4.1) islower than 65, the unit should be configured in accordance with the following table:RSSI RecommendedMaximum Data RateRSSI > 65 3Mbps53 < RSSI < 65 2MbpsRSSI < 53 1Mbps2. From the main menu, type 3 to access the Basic Configuration menu. Type 5 to access theMaximum Data Rate menu.• Type 3 (3Mbps) if the RSSI reading is higher than 65 units.• Type 2 (2Mbps) if the RSSI reading is between 53 to 65 units.• Type 1 (1Mbps) if the RSSI reading is lower than 53 units.3. Reset the unit for the new configuration to become effectiveSee Appendix C for more details on the Maximum Data Rate parameter.

Verifying Proper OperationSU-R Installation Manual 15 BreezeACCESS II Series6. VERIFYING PROPER OPERATION6.1 Checking the LEDsAfter completing the installation, the system starts operation. To verify proper operation, view theLEDs located on the front panel of the unit. Table 6-1 lists the various LED states.Table 6-1. SU LEDsName Description FunctionalityPOWER Power supply On – After successful power upOff – Power offH, M, L Quality ofreceived RFsignalVery low quality reception or notsynchronized with Access Unit.Low quality reception (usuallyenabling 1Mbps traffic).Medium quality reception (usuallyenabling 2 Mbps traffic).High quality reception (usuallyenabling 3 Mbps traffic).6.2 Verifying the Ethernet ConnectionOnce you have connected the unit to an Ethernet outlet, verify that the EthernetIntegrity indicator (the yellow LED embedded in the Ethernet connector) is on,indicating that the unit is connected to an Ethernet segment. The Ethernet Activityindicator (the green embedded LED) should blink whenever the unit receives ortransmit traffic on the Ethernet port.

Verifying Proper OperationBreezeACCESS II Series 16 SU-R Installation Manual6.3 Verifying Data ConnectivityFrom the user’s PC or from a portable PC connected to the unit, ping the Access Terminal, or tryto connect to the Internet.6.4 Verifying Telephone Connectivity (units with voice support)To verify correct operation of the telephone, a test telephone with the default telephonyparameters and a known IP address should be connected to the system (the location of the testtelephone is determined by the system administrator).Perform the following steps to verify telephone connectivity:1. Use IP dialing to call the test telephone: dial * followed by the 12-digit IP address of the testtelephone. Verify connectivity. During the conversation, verify that other party has your IPaddress.2. After terminating the call, the other party should use the test telephone to call your IPaddress and verify that the telephone, including the ringing circuits, functions properly.

SpecificationsSU-R Installation Manual 17 BreezeACCESS II Series7. SPECIFICATIONS7.1 RadioFrequency 2.4 GHz ISM bandRadio Access Method FH-CDMAOperation Mode Time Division DuplexChannel Bandwidth 1 MHzOutput Power (at antenna port) 26 dBm typical. (can be reduced to 17 dBm-SW controlled)Antenna Gain A model: 2 X 3 dBi Omni Antennas (OCX connector)A7 (UNI-7): 7 dBi (including 3 m cable w/ OCX connector)Sensitivity 1Mbps -91(dBm at antenna port, BER 1E10-6) 2Mbps -833Mbps -75Data Rate 3Mbps maxModulation Multilevel GFSK7.2 Data CommunicationStandard Compliance IEEE 802.3 CSMA/CD7.3 Voice Communication (units with voice support)Protocol H.323 Voice over IP compliantCompression G.723 6.3 Kbps compression, G.729 8 Kbps compression,G.711 64 Kbps transparentEcho Cancellation G.168, G.131

SpecificationsBreezeACCESS II Series 18 SU-R Installation Manual7.4 Configuration and ManagementLocal Management Via MON port, Monitor program using terminal emulationRemote Management SNMP, Telnet, TFTPRemote Management Access From Wired LAN, Wireless LinkSNMP Agents MIB II, Bridge MIB, Private MIBsAccounting RADIUS compatible clientSecurity Authentication and filteringSoftware upgrade TFTP download7.5 InterfacesRF (Antenna) 2 x OCX jacks (A special OCX to SMA adapter is available)Ethernet 10Base-T (RJ-45)Telephone (units with voice) RJ-11 standard Plain Old Telephone System (POTS) interfaceMonitor 3-pin low profilePower DC socket for a power transformer7.6 ElectricalExternal power Supply 100-250 VAC, 50-60 Hz, 0.5 AInput voltage 5VDC7.7 MechanicalWithout antenna and powersupply

SpecificationsSU-R Installation Manual 19 BreezeACCESS II Series7.8 EnvironmentalOperating Temperature 0°C to 40°COperating Humidity 5%-95% non condensing7.9 Standards Compliance, GeneralEMC FCC part 15, EN 300 826Safety UL 1950, EN 60950Environmental ETS 300 019

Appendix A. Using TelnetSU-R Installation Manual 21 BreezeACCESS II SeriesAppendix A. Using TelnetUse the following procedure to connect to BreezeACCESS units via a Telnet session.1. Connect the PC to the Ethernet port of the unit (or the hub to which the unit is connected)using a straight Ethernet cable. If you connect the PC directly to a unit that is normallyconnected to a hub, use a crossed Ethernet cable. You may also connect the PC to anyEthernet port on the network and communicate with the unit to be managed via the wired orwireless media.2. Make sure that the PC’s IP parameters (IP address and subnet mask) are configured toenable connectivity with the unit.3. Start the Telnet application by selecting , Run and then typing Telnet in the Rundialog box. 4. Select Connect-Remote System from the Telnet window menu. The following dialog box isdisplayed. 5. In the Host Name field, enter the IP address of the unit to be managed.

Appendix A. Using TelnetBreezeACCESS II Series 22 SU-R Installation Manual6. Set the Port field to Telnet (this is the default).7. Set the Terminal Type to VT100 (this is the default). If the VT100 option in not available, dothe following. Select Terminal-Preferences from the Telnet window menu and click the VT-100/ANSI radio button (as shown below). 8. Click in the Connect dialog box. The Select Access Level of the Monitor programshould be displayed.To exit the Telnet session, choose Disconnect from the Connect menu. (The session is terminatedautomatically, after a specific time of inactivity determined by the Log-out Timer).

Appendix B. Basic ParametersSU-R Installation Manual 23 BreezeACCESS II SeriesAppendix B: Basic Parameters• IP Address – Displays the current IP address of the unit and allows entry of a new IP address(4 x 3 digit octets, separated by dots). The default IP Address is 010.000.000.001.• Subnet Mask – Displays the current subnet mask of the unit and allows entry of a newsubnet mask (4 x 3 digit octets, separated by dots). The default mask is 255.000.000.000.• Default Gateway Address – Displays the current address of the default gateway of the unitand allows entry of a new default gateway address (4 x 3 digit octets, separated by dots). Thedefault gateway address is 000.000.000.000.• DHCP Client⇒ DHCP Options – Displays the current status of the DHCP (Dynamic Host ConfigurationProtocol) support, and allows selecting a new operation mode. The available options are:∗ Disable – Use manual procedure for configuring the IP parameters.∗ DHCP Only – Search for a DHCP Server and obtain the IP parameters from it (IPAddress, Subnet Mask and Default Gateway Address).∗ Automatic – Search for a DHCP Server for configuration of the IP parameters. If aDHCP Server is not found within approximately 40 seconds, use the currentlyconfigured IP parameters. The default is Disable.⇒ Access to DHCP - To define the port through which the unit is allowed to communicatewith a DHCP server. The options are the following:∗ From Wlan Only∗ From Ethernet Only∗ From Both Ethernet & Wlan The default for an Access Unit is From Ethernet Only. The default for a Subscriber Unit isFrom Wlan Only.• ESS ID – The ESSID (Extended Service Set ID) of the unit (up to 32 printable ASCIIcharacters). The ESSID is a string used to identify a wireless network. It prevents theunintentional merging of two co-located wireless networks. An SU can only associate with anAU that has an identical ESSID. Use different ESSIDs to segment the wireless access networkand add security to your network. The default value is ESSID1.

Appendix B. Basic ParametersBreezeACCESS II Series 24 SU-R Installation ManualNote: The ESSID string is case-sensitive.• Maximum Data Rate – Displays the current maximum data rate, and allows entry of a newvalue for the maximum data rate.BreezeACCESS units operate at 1 Mbps, 2 Mbps or 3 Mbps. Under certain conditions(compatibility reasons or range/speed trade-off), you may decide to limit the use of higherrates. If the quality of the link is not good enough, it is recommended to decrease the value ofthese parameters (the higher the date rate, the higher the error rate). Otherwise, there is a highprobability that the unit will have to retransmit many frames several times before temporarilyreducing the data rate. A high number of retransmissions reduces the overall throughput forthe selected SU as well as for all the other SUs served by the same AU.The link quality can be estimated based on the RSSI measurement using the Continuous LinkQuality Display in the SU. If the measured RSSI is less than a certain threshold, it isrecommended to decrease the Maximum Data Rate of the SU in accordance with the followingtable:Recommended Maximum Data Rate 3Mbps 2Mbps 1MbpsBreezeACCESS MMDS SU-I/ID RSSI>65 53<RSSI<65 RSSI<53The default value is 3 Mbps. Allowed values are 1, 2 or 3 Mbps.The AU learns the Maximum Data Rate used by each SU during the association process, anduses this rate for transmissions to the specific SU.• Transmit Antenna – Displays which antennas are used for transmission. SU-R units supporttransmit antenna diversity (2 antennas). During reception, a BreezeACCESS unit that isconnected to two antennas dynamically selects the antenna where reception is optimal. Incontrast, if the transmit antenna diversity is enabled, the unit selects the antenna from which itwill transmit before the actual transmission. It usually uses the antenna last used forsuccessful transmission. In installations where a model that can support antenna diversity isconnected to a single antenna, Transmit Antenna Diversity should be configured to transmitonly from that single antenna. Available selections are:⇒ Use Two Antennas⇒ Use Antenna No. 1⇒ Use Antenna No. 2

Appendix B. Basic ParametersSU-R Installation Manual 25 BreezeACCESS II SeriesThe default selection is Use Antenna No. 1 for SU-R-A7 units where a single antenna isconnected to antenna port 1. For SU-R-A units with two omni antennas select Use TwoAntennas.

SU-R Installation Manual 27 BreezeACCESS II Series

Navigation menu