DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-7
SREPN connections
2
Table 2-3
shows the sequence of events to transfer to the Survive mode, the
approximate times for each event, and the service affected at each stage.
TN2301 (SRSwitch)
The SRSwitch circuit pack (TN2301) occupies 6 slots in the SRP cabinet.
Figure 2-4
shows the faceplate switch and LEDs for the TN2301 circuit pack.
Figure 2-4.
TN2301 faceplate switch and LEDs
Table 2-3.
Transfer sequence to Survivable Remote mode
If the link between
the Release 9r and an
EPN is down for
Then
Service affected
1 minute
Emergency Transfer Mode activated.
Only established calls
preserved.
a
a.
Similar to Emergency Transfer mode, only established, intra-EPN calls are preserved. No new or
originating calls can be made.
2-3 minutes
System “waits” to determine whether the
Release 9r is going through a reset 3.
3 minutes
Survive mode activated for each SREPN.
b
b.
Transfer to Survive mode includes a cold restart of the SREPN.
Established calls
terminated (restart)
5-6 minutes
Transfer sequence completed; EPN service
restored.
Intra-EPN calls possible
c
c.
Calls using the link back to the Release 9r are not possible.
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BKUP
DATA
AUTO
RSTR
AUTO
TEST
SURVIVE
MODE ON