Black Box MT850A 25-pin Telco Connector

12-8 Compact T1 - Release 6.1
Quad T1 Card
Connector Pinouts
Connector Pinouts
25-pin Telco Connector
The pinouts are as follows:
Slot Port Pair Pin
Location Function Color Code
1 and 4 1 1 26
1Tip Receive from DS1 network Ring Receive from DS1 network White Blue
2 27
2Tip Transmit to DS1 network Ring Transmit to DS1 network White Orange
1 and 4 2 3 28
3Tip Receive from DS1 network Ring Receive from DS1 network White Green
429
4Tip Transmit to DS1 network Ring Transmit to DS1 network White Brown
1 and 4 3 5 30
5Tip Receive from DS1 network Ring Receive from DS1 network White Slate
631
6Tip Transmit to DS1 network Ring Transmit to DS1 network Red Blue
1 and 4 4 7 32
7Tip Receive from DS1 network Ring Receive from DS1 network Red Orange
833
8Tip Transmit to DS1 network Ring Transmit to DS1 network Red Green
2 and 5 1 9 34
9Tip Receive from DS1 network Ring Receive from DS1 network Red Brown
10 35
10 Tip Transmit to DS1 network Ring Transmit to DS1 network Red Slate
50
25
26
1