Toshiba STRATA CTX100 Installation And Maintenance Manual page 174

PCB Installation
RDDU – Direct Inward Dialing Line Interface Unit
Table 4-10 RDDU Controls, Indicators, and Connectors
Control/Indicator/Connector
Pad switch SW101 (circuit 1)
Pad switch SW201 (circuit 2)
Pad switch SW301 (circuit 3)
Pad switch SW401 (circuit 4)
J1 connector
J2 connector
DID line circuit 1 CD122
DID line circuit 2 CD222
DID line circuit 3 CD322
DID line circuit 4 CD422
Jumper plug P101
Jumper plug P201
Jumper plug P301
Jumper plug P401
Figure 4-18 RDDU Controls, Indicators, and Interface Connectors
4-24
Type of Component
3-position slide switch
Modular connection
Modular connection
Red LED (top)
Red LED
Red LED
Red LED (bottom)
3-terminal jumper plug
LEDs
RDDU
Description
Enables -3 dB signal level drop for line circuit.
Interface connector for DID line circuits 1 & 2
Interface connector for DID line circuits 3 & 4
Lights to indicate line circuit is in operation.
(Trunk indicator will not light unless RDDU is
connected to a DID line.)
Adjusts for dial pulsing at different loop lengths.
Backplane Connector
5813
Strata CTX I&M 10/02