Compact T1 - Release 6.1 3-9
Electrical Installation and Cabling
Interface Connectors
25-Pair Telco Connectors
Tip and Ring Analog Interfaces equipped with standard 25-pair Telco Connectors
(female) for connection to key systems, f ax machines, modems, and PBXs. These
interfaces are also used for ISDN BRI ports and are jumper selectable on the Quad T1
card.
Circuit connections are made at the 25-pair
telco connectors. A standard 25-pair
telephone cable with RJ-21X wiring and a
male D-type connector at the Unit end is
required.
The pinouts are as follows:
Pair Pin Location Function Color Code
126
1Tip Channel 1
Ring Channel 1 White/Blue
Blue/White
227
2Tip Channel 2
Ring Channel 2 White/Orange
Orange/White
328
3Tip Channel 3
Ring Channel 3 White/Green
Green/White
429
4Tip Channel 4
Ring Channel 4 White/Brown
Brown/White
530
5Tip Channel 5
Ring Channel 5 White/Slate
Slate/White
631
6Tip Channel 6
Ring Channel 6 Red/Blue
Blue/Red
732
7Tip Channel 7
Ring Channel 7 Red/Orange
Orange/Red
833
8Tip Channel 8
Ring Channel 8 Red/Green
Green/Red
934
9Tip Channel 9
Ring Channel 9 Red/Brown
Brown/Red
10 35
10 Tip Channel 10
Ring Channel 10 Red/Slate
Slate/Red
50
25
26
1