Nortel Passport 4460, Hardware Reference Manual

Page: 66 / 152

66 Chapter 3 Expansion Modules
205677-F Rev 00
ISDN BRI Voice Expansion Modules - S/T Interface
(Single and Dual Port)
The ISDN BRI Voice Expansion Module - S/T Interface Module (single and dual
port) supports the following:
• S/T interface
• Two ISDN BRI Voice Expansion Modules supported per unit
• Supports two B-channels, a D-channel, per port
• Supports QSIG and ETSI ISDN.
The illustration below shows an ISDN BRI Voice Expansion Module - S/T
interface - single port back panel.
Caution:
The ISDN BRI Voice Expansion Module - S/T interface -
single and dual port, cannot be directly connected to the network.
Pin 1
1
ISDN BRI VOICE S/T
Transmit Data to Network (Tx+)
1
2
3
4
5
6
7
8
RJ-45 Pin Assignments
Receive Data from Network (Rx+)
Receive Data from Network (Rx-)
Transmit Data to Network (Tx-)
Pins 1, 2, 7, 8 Not Connected
Indicator