Avaya ESS User Manual

ESS Overview
54 Avaya Enterprise Survivable Servers (ESS) Users Guide
Once in control on Port Network 4, the ESS server assumes control of Port Network 5 through
the EI board.
Figure 21: ATM, single ESS server, multiple nodes in a takeover scenario
The Users in Port Network 1 through 3 can make station-to-station calls to each other but
cannot make station-to-station calls to users in Port Networks 4 through 6. The reverse is also
true, where users in Port Networks 4 through 6 cannot make calls to users in Port Networks 1
through 3.
ATM ATM
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
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p
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x
D
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2
1
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
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m
p
l
e
x
D
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p
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2
1
S8710 Media Server
(Main Server)
PN #1
PN #2
PN #3
PN #6
PN #5
PN #4
S8700 ESS Server
(1st Alternative)
Out of Service
CSS / EI (Fiber)
ATM / ATM-EI (Fiber)
Dup Link
Port Network Control Link (EAL)
IP Connection into Control Network
Server or Network Failure
VoIP Path
DSIC LInk

Avaya ESS Specifications

General

Brand	Avaya
Model	ESS
Category	Server
Language	English