Pcb Placement Guidelines - Toshiba STRATA CTX100 Installation And Maintenance Manual

PCB Placement Guidelines

Install the RRCU PCBs in the Base Cabinet first. Station, line and option PCBs can be mixed in
cabinets in any pattern. Do not skip slots except for vacant slots that provide RDTU or RPTU
capacity. Also, do not skip slots except for vacant slots that provide for BBKU/BDKS with
Speaker OCA. Refer to
BDKU/BDKS PCBs first because they have special placement rules. Use the following numbered
sequence as a guide to installing the PCBs.
When placing PCBs, do not install more than five BDKU/BDKS PCBs in the same
Important!
cabinet. Five BDKU/BDKS PCBs support 80 digital telephones, which brings the
cabinet power factor to 82.25. Adding more PCBs of any type to a cabinet that has
five BDKU/BDKS PCBs may cause the cabinet to exceed it's power factor (85
max.). See Worksheet 7.
Processor PCBs
Step 1:
• BECU (Slot B101)/ BBCU (slot B102), are required for system operation. The BECU/BBCU
will support up to two cabinets without the BEXS/BBMS expansion subassemblies.
• BEXS and BBMS subassembly PCBs are required for 3 to 7 cabinet systems.
• BSIS subassembly PCB is required for SMDR and/or SMDI or Toshiba Proprietary Voice Mail
RS-232 interface.
The BECU/BBCU is licensed for 64 ports and four DTMF receivers from the factory. If
Note
more capacity is required additional licenses must be uploaded to the processor. See
"Worksheet 9 – Software Licenses" on page
Remote Cabinet PCBs
Step 2:
• RRCU PCBs installed in the main location must be placed in Base Cabinet slots S102~S108 in
any order. Before installing other PCBs make sure there is a Base Cabinet slot available for
each RRCU PCB needed. An RRCU may occupy a vacant slot adjacent to RDTU or RPTU. An
RRCU PCB in a remote location can support one or two remote cabinets and can be installed in
any slot of either cabinet.
The number of RRCU PCBs required in the Base and Remote Cabinet locations is shown in
Table 1-52:
Table 1-52 Main Processor PCB/ Remote Cabinet Configuration
RRCU PCBs
Needed in
Base Cabinet
1
2
3
4
5
6
Strata CTX I&M 10/02
Tables 1-54 and 1-55. Toshiba recommends placing the RDTU, RPTU and
Remote Cabinet Configuration
1 or 2 Remote Cabinets in one location
2 to 4 Remote Cabinets in two locations or 3 to 4
Remote cabinets in one location.
3 cabinets if cabinets are in separate remote locations.
4 cabinets if cabinets are in separate remote locations.
5 cabinets if cabinets are in separate remote locations.
6 cabinets if cabinets are in separate remote locations.
Worksheet 6: Strata CTX670 Cabinet Slot Configuration
1-52.
RRCU PCBs Needed at
Remote Location (s)
1
2
3
4
5
6
Strata CTX Configuration
1-37