Specifications

Reference Guide

4-95

System Configuration and Operation WAN Card Redundancy

Figure 4-64. Typical System with CPU Switchover Completed

4.27 WAN Card Redundancy

Both T1 and E1 WAN redundancy are supported in cross-connect systems.

The cross-connect system allows 1:N redundancy with an 8014 WAN in slot W4 protecting

the 8010 WANs in slot W1 through W3. Only WAN cards with identical DSX, CEPT and/or

CSU modules and configured the same are protected. The 8014 1:N redundancy protects

against WAN card failure only, it does not protect against T1/E1 facility failure. The 8014

WAN card in slot W4 must not have any T1/E1 connections as it will disturb the signal and

cause a constant CGA alarm to be logged.

WAN redundancy switching can be initiated by one of the following:

•

A software command issued by the operator

•

Removal of the active WAN card from the system

•

Failure of the active WAN port or card

•

CGA alarm declaration on the active WAN port or card

Node_1 | | 12-31-99 14:33

Slot Installed Status

C1 CPU XCON RDNT

C2 CPU XCON

P1/U1 ADPCM-64

P2/U2 ADPCM-64

P3/U3 E&M 2Wx8-6

P4/U4 FXS 2Wx8-9

W1/U5 FXO 2Wx8-9

W2/U6 CSU+CSU

W3/U7 CSU+CSU

W4/U8 CEPT+CEPT

IF INTF+modem

S1 PS1

S2 PS2

S3 Ringer