25-Pair Telco Connectors - Black Box Compact T1 MT850A User Manual

25-Pair Telco Connectors

Tip and Ring Analog Interfaces equipped with standard 25-pair Telco Connectors
(female) for connection to key systems, fax 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
1
2
3
4
5
6
7
8
9
10
Compact T1 - Release 6.1
Pin Location Function
26 Tip Channel 1
1 Ring Channel 1
27 Tip Channel 2
2 Ring Channel 2
28 Tip Channel 3
3 Ring Channel 3
29 Tip Channel 4
4 Ring Channel 4
30 Tip Channel 5
5 Ring Channel 5
31 Tip Channel 6
6 Ring Channel 6
32 Tip Channel 7
7 Ring Channel 7
33 Tip Channel 8
8 Ring Channel 8
34 Tip Channel 9
9 Ring Channel 9
35 Tip Channel 10
10 Ring Channel 10
Electrical Installation and Cabling
Interface Connectors
26
1
Color Code
White/Blue
Blue/White
White/Orange
Orange/White
White/Green
Green/White
White/Brown
Brown/White
White/Slate
Slate/White
Red/Blue
Blue/Red
Red/Orange
Orange/Red
Red/Green
Green/Red
Red/Brown
Brown/Red
Red/Slate
Slate/Red
50
25
3-9