Avaya Nortel Communication Server 1000 Manual page 62
Ip line fundamentals
Hide thumbs
Also See for Nortel Communication Server 1000:
- Reference (700 pages) ,
- Configuration manual (350 pages) ,
- Hardware installation and maintenance (262 pages)
Table of Contents
Advertisement
62 Features
Scenario
Call Server cold restart
•
A call is established between IP Phones A and
B registered with the same Call Server.
•
The Call Server cold restart (SYSLOAD)
occurs.
•
The users of IP Phones A and B do not go
on-hook or press any keys during the Call
Server warm restart.
Main office failure for branch office (scenario 1)
•
Branch IP Phones A and B register with the
Media Gateway 1000B and are redirected to
the main office.
•
IP Phones A and B registered with the main
office establish a call.
•
A serious main office failure occurs. The active
Branch IP Phones cannot re-register with the
main office and re-register with the branch
office in local mode. IP Phone A re-registers
in local mode first.
Main office failure for branch office (scenario 2)
•
IP Phones A and B register with the Media
Gateway 1000B and are redirected to the main
office.
•
Branch office warm or cold starts.
•
Branch users A and B registered with the main
office establish a call.
•
A serious main office failure occurs so the
active branch IP Phones cannot re-register
with the main office and they re-register with
the Branch office in local mode. IP Phone A
re-registers in local mode first.
Copyright © 2003–2008, Nortel Networks
.
Result
The call is not lost.
The call cannot be rebuilt after the SYSLOAD.
The PARTIAL REBUILT -> REBUILT transition
is almost instant since the Online messages
are sent in a group as a response to the Sync
Request.
The call is not lost.
The HALF REBUILT -> REBUILT transition
occurs since the far end is known to the Call
Server gateway to the Media Gateway 1000B.
The call is not lost.
Although the branch office LTPS wrote the IP
Phones A and B data to its RLM table when it
redirected the IP Phones to the main office,
the RLM data is lost and cannot be restored
when the branch office restarts. The transition
is similar to a Call Server cold start: PARTIAL
REBUILT -> REBUILT.
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Advertisement
Table of Contents
