Avaya ESS User Manual

ESS failover examples
Issue 1.1 June 2005 41
Example 5: CSS with DS1C
In example 5, Port Network 4 is remotely connected to the CSS using a DS1C. Port Network 4
is equipped with Public Switched Telephone Network resources. There is an IPSI board in each
Port Network.
Figure 13: CSS with DS1C - normal operation
CSS
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
i
m
p
l
e
x
D
u
p
l
e
x
ch
ch
2
1
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
i
m
p
l
e
x
D
u
p
l
e
x
ch
ch
2
1
S8710 Media Server
(Main Server)
PN #1
PN #2
PN #3
PN #4
cycmcss3 KLC 031505
disc
S8500 ESS Server
(1st Alternative)
Remote site
DS1C link
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