Avaya ESS User Manual page 37

The system is now fragmented between two controlling servers.
Some functionality provided by adjuncts may be missing for users in Port Networks 4 and
●
5. See Feature considerations
Users on each side of the fragmentation cannot make normal station-to-station calls to
●
Port Networks on the other side of the fragmentation.
Figure 10: Mixed Port Network after failover
PN #1
PN #2
PN #2 remains in service
on page 88 for more information on adjuncts.
S8710 Media Server
(Main Server)
disc COMPACT
1
2
UID
disc COMPACT
1
2
UID
PN #3
ATM
Port Network Control Link (EAL)
IP Connection into Control Network
Server or Network Failure
VoIP Path
DSIC LInk
S8500 ESS Server
(1st Alternative)
disc
PN #4
WAN Failure
Issue 1.1 June 2005
ESS failover examples
PN #5
Remote Site
CSS / EI (Fiber)
ATM / ATM-EI (Fiber)
Dup Link
Out of Service
cycmpnc2 KLC 031505
37