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4 Hardware Installation

All data cables (upper and lower end)

All small external housings (if used)

All antennas on large external housings (if used)

the radio modem designated as synchronization mas-

ters, with the additional designation "Sync master",

4.3 Installation at the Radio Tower

4.3.1 Installing the tower standoff at the radio mast

4.3.2 Installing the WIMAN hardware at the tower standoff

Attach the WIMAN hardware (external housing and antennas)

to the tower standoff at the suitable positions and align. If a

WIMAN is to take over the function of the synchronization-

master and is not clocked from a remote location, always use the

unit aligned to the north (0º) as the synchronization master.

4.3.3 Installation

Install all data cables. Connect the data cables with the Hybrid

cables coming from the WIMAN radio modems.

Attention:

For correct function and error-free installation, be sure that the

sync cable is installed before testing.

4.3.4 Start tests

Now test all installed components on correct function and instal-

lation. You find a specification of the tests in chapter 6 on

page 58.

4.3.5 Checking the antenna adjustment

• Check to see that all antennas are facing the correct direc-

tion.

• Note the adjustments of all antennas.

4.3.6 Test all devices

• Make sure all devices on the radio tower are switched on

and are connected to the synchronization cable.

• Test each WIMAN radio modem again (see chapter 6,

page 58.) to make sure that there is no error caused by the

synchronization cable.

Summary of content (20 pages)

PAGE 1
4 Hardware Installation - All data cables (upper and lower end) - All small external housings (if used) - All antennas on large external housings (if used) - the radio modem designated as synchronization masters, with the additional designation "Sync master", 4.3 Installation at the Radio Tower 4.3.1 Installing the tower standoff at the radio mast 4.3.
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4 Hardware Installation 4.3.7 Save all configuration data of the WIMAN radio modems at the radio tower • Use the same name conventions used for the cables and WIMAN radio modems. • Record the following information with a terminal program: - Parameter („show“-command) - Statistics („stat“-command) 4.4 Grounding It is extremely important to ground all installed devices on the radio tower. This will reduce the amount of damage should lightning strike.
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4 Hardware Installation 4.5 Burst-Synchronisation Burst-synchronization is the coordination process of frequency hopping tables, receipt, and points of transmitting time for several WIMAN networks within the same geographical area. Burst-synchronization is achieved by both hardware and software items. The hardware item is a synchronization cable, which is only a wire, which connects the X.21-interfaces among themselves. For the X.
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Hardware Installation Line Master 1 NetId = 1 NodeId = 0 Destination = 1 SyncMode = (according to local Network) Table 1 NetId = 1 NodeId = 1 Destination = 0 SyncMode = Master parameters of an extended point-to-point connection (connection 1) Line Master 2 NetId = 2 NodeId = 0 Destination = 1 SyncMode = Slave Table 2 Line Slave 1 Line Slave 2 NetId = 2 NodeId = 1 Destination = 0 SyncMode = (according to local Network) parameter of an extended point-to-point connection (connection 2) 54 / 90
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Reception quality and transmission speeds 5 Reception quality and transmission speeds For the examination of the receipt quality as well as to error detection, test loops can be generated. The type of test loop can be influenced by the configuration of the parameters LoopData, LoopMode and LoopTest. The parameter LoopData enables the setting of the Byte-values that are to be generated (see page 18). This parameter can be produced on a WIMAN ACCESS only.
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5 Reception quality and transmission speeds 4. To take over the modifications into the current configuration leave the configuration mode by entering the command exit (see page 27).
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5 Reception quality and transmission speeds 5.2.1 5.2.2 - For the WIMAN STAR enter the commands „stat wl“ and „stat wl“ to ensure proper functioning of the data exchange. - For the WIMAN LINE enter the command „stat sync“ to check the setting of both signals (both signals have to be set to „On“). Continue the Tests • Switch on the WIMAN radio modem next to the synchronization master. • Switch off the synchronization master. • Perform a reception test. • Check the X.
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6 Frame Relay 6 Frame Relay 6.1 Technical Description of the Frame of Relay Features The WIMAN STAR supports the multiplexing of Frame Relay packages. In multiplexing procedure, the packages received from the Frame Relay Switches are transferred to the WIMAN ACCESS, which is connected to a Frame Relay Router at the user’s site. Figure 10 Frame Relay connections with the WIMAN For addressing the WIMAN ACCESS the DLCI number (Data Link Connection Identifier) of the Frame of Relay protocol is used.
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6 Frame Relay 6.1.1 - LMI (Local Management Interface of ITU-T Q.933 or ANSI T1.617), since this procedure uses DLCI 1023 or DLCI 0, - Establishing of connections for SVCs (uses DLCI 0), - Multiple transmissions (uses DLCI 1019 ... 1022).
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6 Frame Relay DLCI value calculation The LCI value for the Frame Relay Router of the user is calculated as follows: DLCIm = 512 + NodeId * 4 + m m = [0 ... 3] Table 4 lists the valid DLCI numbers for appropriate node identifiers (NodeId) on use of the 2-Byte-Frame of Relay address array.
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6 Frame Relay 6.1.2 DLCI-areas when the 2-Byte-Address array is used (ITU Q.922) Table 5 lists the allocation of the DLCI numbers on use of the 2Byte-address array.
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6 Frame Relay 6.2 Frame Relay-configuration samples 6.2.1 Sample configuration with CISCO-Routers 192.168.40.128 /29 .34 (515) .3 (519) Access 1 .33 (515) .129 Cisco 1005 .130 ServiceNotebook D 516 192.168.33.0 /24 .3 192.168.40.136 /29 D 520 GW .1 .20 .2 (515) Cisco 1005 Star .38 (515) .4 (523) Access 2 .37 (515) .137 Cisco 1005 .138 ServiceNotebook 192.168.40.240 /29 .66 (515) .11 (519) Access 9 Figure 11 .65 (515) Tiny Router .195 .
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6 Frame Relay frame-relay frame-relay frame-relay frame-relay frame-relay frame-relay map map map map map map ip ip ip ip ip ip 192.168.40.6 531 192.168.40.7 535 192.168.40.8 539 192.168.40.9 543 192.168.40.10 547 192.168.40.11 551 ! interface Serial0.2 point-to-point ip unnumbered Ethernet0 no arp frame-relay no cdp enable frame-relay interface-dlci 516 ! interface Serial0.3 point-to-point ip unnumbered Ethernet0 no arp frame-relay no cdp enable frame-relay interface-dlci 520 ! interface Serial0.
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6 Frame Relay ip address 192.168.40.129 255.255.255.248 ! interface Serial0 no ip address encapsulation frame-relay IETF no keepalive ! interface Serial0.1 point-to-point ip address 192.168.40.33 255.255.255.252 no arp frame-relay no cdp enable frame-relay interface-dlci 515 ! interface Serial0.2 point-to-point ip unnumbered Ethernet0 no arp frame-relay no cdp enable frame-relay interface-dlci 516 ! ip classless ip route 0.0.0.0 0.0.0.0 Serial0.
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6 Frame Relay IPSerAddress IPSerMask IPTFTPServer Location 192.168.40.2 255.255.255.224 192.168.33.178 Area_01 # Sync SyncMode passwd enable crypt Off Av/WbhGC.
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7 Troubleshooting 7 Troubleshooting 7.1 Techniques and Methodologies Used for Troubleshooting 7.1.
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7 Troubleshooting If you are still uncertain whether there is a problem with the wiring of the STAR, proceed as follows: Check the statistics with the commands stat serial ext and stat wl. If you transmit a Ping, the Rx and Tx-counter should be increased. Check whether the data cable is wired according to the specifications shown in chapter 10, page 85. Check all modules for correct wiring. Check the hybrid cables. Check the interface converters. Check the cross over cables.
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7 Troubleshooting • Bad port on the switch - Check other customers who are attached to the same STAR - In case no further customers are attached to the same STAR, try attaching the device to another port. WIMAN Baud rate parameters are not adjusted correctly: If the WIMAN radio modem does not interface with the terminal program, the Baud rate may be set incorrectly on the WIMAN and/or the terminal program.
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7 Troubleshooting Any of these problems may lead to poor or no radio communication. Check the antenna cables for damages. If there are no damages, check the synchronization connection. If the problem persists, the WIMAN may need to be replaced. 7.1.
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Appendix A: WIMAN Hardware 8 Appendix A: WIMAN Hardware !!!!!!!!!!Still being revised!!!!!!!!!!!!. 8.