PCB Installation
RDDU – Direct Inward Dialing Line Interface Unit
4-24
Strata CTX I&M 10/02
Figure 4-18
RDDU Controls, Indicators, and Interface Connectors
Table 4-10
RDDU Controls, Indicators, and Connectors
Control/Indicator/Connector
Type of Component
Description
Pad switch SW101 (circuit 1)
3-position slide switch
Enables -3 dB signal level drop for line circuit.
Pad switch SW201 (circuit 2)
Pad switch SW301 (circuit 3)
Pad switch SW401 (circuit 4)
J1 connector
Modular connection
Interface connector for DID line circuits 1 & 2
J2 connector
Modular connection
Interface connector for DID line circuits 3 & 4
DID line circuit 1 CD122
Red LED (top)
Lights to indicate line circuit is in operation.
(Trunk indicator will not light unless RDDU is
connected to a DID line.)
DID line circuit 2 CD222
Red LED
DID line circuit 3 CD322
Red LED
DID line circuit 4 CD422
Red LED (bottom)
Jumper plug P101
3-terminal jumper plug
Adjusts for dial pulsing at different loop lengths.
Jumper plug P201
Jumper plug P301
Jumper plug P401
4
J1
J2
SW401
SW301
SW201
SW101
LEDs
32
1
RDDU
RDDU
P401
H M L
P301
H M L
P201
H M L
3 0
3 0
3 0
3 0
5813
P101
H M L
Backplane Connector
Summary of Contents for Strata CTX100
Page 16: ...Introduction Related Documents Media xii Strata CTX I M 10 02 ...
Page 94: ...Strata CTX100 Installation Installing the CTX100 Cabinet 2 24 Strata CTX I M 10 02 ...
Page 150: ...Strata CTX670 Installation Remote Expansion Cabinet Unit 3 56 Strata CTX I M 10 02 ...
Page 188: ...PCB Installation Network Requirements 4 38 Strata CTX I M 10 02 ...
Page 238: ...T1 Loop Back Testing 6 12 Strata CTX I M 10 02 ...
Page 310: ...Station Apparatus 2000 series Telephones 8 48 Strata CTX I M 10 02 ...
Page 342: ...Peripheral Installation Station Message Detail Recording SMDR 9 32 Strata CTX I M 10 02 ...