Table 6: Faceplate Mini-Din Connector - Nortel Express Call Center Troubleshooting Manual

March 2005
RS-232 backplane signals (continued)
Table 5:
Pin No.
75B
76A
76B
77A
77B
78A
78B
Faceplate mini-DIN connector
Table 6:
Pin
No.
1
2
3
4
5
6
7
8
Voice Services on Media Card Maintenance and Troubleshooting Guide
Signal Dir
BRTSA- O
SGNDB C
BSINB- I
BSOUTB- O
BDCDB- C
BDTRB- O
BDSRB- I
Signal Dir
BDTRB- O
BSOUTB- O
BSINB- I
SGND C
BSINA- I
BCTSA- I
BSOUTA- O
BDTRA- O
Description
Port A Request To Send
Port B Signal Ground
Port B Serial Data In
Port B Serial Data Out
Port B Data Carrier Detect
Port B Data Terminal Ready
Port B Data Set Ready
Description
Port B Data Terminal Ready
Port B Serial Data Out
Port B Serial Data In
Signal Ground
Port A Serial Data In
Port A Clear To Send
Port A Serial Data Out
Port A Data Terminal Ready
Media Card
19