Specifications

3-82 Reference Guide
Model No.
Running Head
WAN Card Redundancy System Configuration and Operation
In cross-connect systems, switching always occur on both ports of a WAN card. Therefore,
both ports of all active WAN cards must have the same plug-in modules as the redundant-card
ports.
Figure 3-66 shows a System Main Screen for a cross-connect system with WAN card
redundancy. In this example, the CSU ports of the WAN cards in slots W1, W2, and W3 are
backed up by the CSU ports of the WAN card in slot W4. The redundant WAN card in slot W4
takes over for the first active WAN card that fails.
Figure 3-66. Typical Cross-Connect System with WAN Card Redundancy
Figure 3-66 shows a WAN Card Main Screen for the card in slot W1 with port 1-1 selected.
To force a switch, press “
w
” (
sWitch
command), then press "
y
" to complete the switch. The
traffic on the WAN card in slot W1 will be switched to the WAN-R card in slot W4. The Main
System Screen (see Figure 3-67) now shows both ports of the card in slot W4 as active port
(Status =
aa
) and the ports on the card in slot W1 as redundant (Status =
rr
).
Node_1 | | 12-31-99 14:33
Slot Installed Status
C1 CPU XCON
C2
P1/U1 E&M 4Wx8ER ssssssss
P2/U2 E&M 4Wx8ER ssssssss
P3/U3 FXS 2Wx8-9 ssssssss
P4/U4 SRU 232x10 ssssssssss
W1/U5 CSU+CSU aa
W2/U6 CSU+CSU aa
W3/U7 CSU+CSU aa
W4/U8 CSU+CSU rr
IF INTF+modem
S1 PS1
S2 PS2
S3 Ringer
Alarms | Config | Del | accepT | Xcon | sYs | Logout | Oos | cpusWtch