Nortel Networks NN43001-563 - Manual (Page 431)

Interoperability with IP Trunk 3.01 (MPLR17662 patch) 431
Since there is no adverse effect caused by installing the patch on IP
Trunk 3.0, and upgrading a network on a node-by-node basis simplifies
maintenance greatly, Nortel recommends that the second alternative be
used.
The nodes must use the Nortel H.323 Interoperability format or use a
Gatekeeper to resolve destinations.
The applicability of MPLR17662 is limited in certain situations:
• The patch is required if the format of the received SETUP message is
CSE, with or without a Gatekeeper. If the format received is not CSE,
the patch is not required.
• The patch is not required for ITG Trunk 2.x.26G or ITG Trunk 2.x.25
interworking with IP Trunk 3.01.22, as these older versions of ITG Trunks
do not support the CSE format.
• The patch is not required when upgrading a few IP Trunks to IP Trunk
3.01.22 to interoperate with other nodes running IP Trunk 3.00.53, ITG
Trunk 2.32.26G, and ITG Trunk 1.0.43, and the format received is
SL1, SL1 ESN5, or QSIG. If the format received is CSE, which is not
supported on ITG Trunk, the patch is required.
For pairs of nodes in this scenario, the following applies:
• IP Trunk 3.00.53 interworking with 3.01.22 - the patch is required if the
CSE format is used.
• IP Trunk 2.32.26G interworking with IP Trunk 3.01.22 - no patch is
required.
• IP Trunk 1.0.43 interworking with IP Trunk 3.01.22 - no patch is required.
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.