Nortel Networks 2700 User Manual

Appendix A  Technical specifications  91

Nortel VPN Router Installation — VPN Router 2700 

The ISDN BRI S/T and ISDN BRI U interface cards have a single RJ-45 
connector that provides the signals needed to interface to ISDN equipment. (To 
connect the ISDN S/T interface to the ISDN network, you must attach an external 
NT-1 device to the RJ-45 connector.)

 shows the ISDN BRI S/T interface card or the ISDN BRI U interface 

card. Both interface cards look the same.

ISDN BRI S/T interface card or ISDN BRI U interface card

The connector on the ISDN BRI S/T and ISDN BRI U interface cards 
accommodates an 8-pin RJ-45 modular patch cord. These cables are sold as 
Category 5, or Ethernet, cables.

 provides the ISDN BRI S/T cable pinouts.

Note: Nortel does not supply a cable with the ISDN BRI interface cards.

ISDN BRI S/T cable pinouts

1

N/C

2

N/C

3

Receive +

4

Transmit +

5

Transmit -

6

Receive -

7

N/C

8

N/C

ISND ST