Slot Assignments - Toshiba STRATA CTX100 Installation And Maintenance Manual

ISDN Interfaces
RPTU Installation

Slot Assignments

Up to eight RPTU PCBs can be installed in a Strata CTX system providing up to 188 PRI lines
(B-channels). If RPTU (PRI) and RDTU (T1) PCBs are installed, the maximum combined PCBs
cannot exceed the eight. The PCBs must be placed in designated slots in each of the cabinets.
Refer to
the guidelines regarding RPTU PCB slot assignments.
RPTU Installation
Before installing a RPTU PCB into a Strata CTX system, refer to
Configuration:
"Worksheet 6: Strata CTX670 Cabinet Slot Configuration" on page 1-36
•
"ISDN PRI Digital Line PCBs" on page 1-39
•
➤
To install an RPTU PCB
1. Set the jumper wire plugs JP1 and JP2 (LB) to the Off position.
2. Turn the Strata CTX system power Off.
3. Insert the RPTU (component side facing right) into the appropriate slot (see
Line PCBs" on page
connectors.
4. After installing the RPTU, gently pull the PCB outward. If the connectors are properly seated, a
slight resistance is felt.
For cabling information and requirements, refer to
Note
Table 5-1 RPTU Switches, Jumpers, and Connectors
Switches/Jumpers/Connector
SW1 (Line length adjustment switch)
SW2 (Reset switch)
JP1 & JP2 (Loop-back jumpers)
J1 8-pin Modular Connector (RJ45)
J2 6-pin Modular Connector (RJ11)
1. If this switch on the Primary Clock source RPTU is pressed, the clock source will automatically revert to the
Secondary Clock source.
5-4
Chapter 1 – Strata CTX Configuration,
1-39) and apply firm, even pressure to ensure proper seating of
1
"ISDN PRI Digital Line PCBs" on page
(mentioned above in slot assignments)
"Cabling" on page
Description
Matches the RPTU impedance to the impedance of the
line (length between the CSU and the RPTU). Refer to
Table 5-3 on page 5-7.
Resets or initializes the RPTU firmware. Press this switch
to correct an out-of-service condition, or just prior to
connecting to the Network PRI.
Makes loop-back tests of the cabling between the ISDN
Network switch, CSU, and RPTU.
Connects the RPTU to the CSU/network PRI ISDN line.
Connects the RPTU to a terminal or PC to monitor
D-channel data.
1-39, for
Chapter 1 – Strata CTX
"ISDN PRI Digital
5-7.
Strata CTX I&M 10/02