Nortel Networks Passport ARN Routers - Manual (Page 132)

Installing and Operating Passport ARN Routers
C-8 114200-E Rev 00
Token Ring STP Interface
The token ring STP interface provides shielded twisted-pair support. The ARN
token ring base module, token ring expansion module, and token ring/tri-serial
expansion modules contain this standard 802.5 DB-9 receptacle.
Table C-5 shows the pin assignments for the standard 9-pin STP receptacle on the
ARN base or expansion module and identifies its pin locations.
Table C-5. Token Ring STP Interface Pin Assignments
Pin Assignment Pin No. Signal Name
1 RX+ (Receive from STP wire)
2 GND
3 GND
4 GND
5 TX+ (Transmit to STP wire)
6 RX- (Receive from STP wire)
7 GND
8 GND
9 TX- (Transmit to STP wire)
Pin 5 Pin 1
Pin 9 Pin 6