Nortel Networks NN43001-563 User Manual

Page 231

Configure dialing plans within the corporate network

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When an IP Trunk 3.01 (or later) node is configured as an ESN5 node and a
call is received from a remote node that cannot send ESN5 data and does
not provide the ESN5 data, the configured ESN5 prefix is inserted in front of
the called number by the destination. (The remote node can be an IP Trunk
3.01 (or later) or other gateway using the interoperability format. It can also
be "H.323 only".) When the IP Trunk 3.01 (or later) node is configured to
use standard signaling and the dialing plan entry indicates ESN5 capability,
the ESN5 prefix is inserted in front of the called number by the originator.

For more information see

"Non-Gatekeeper-resolved (local) dialing plan"

(page 318)

Special dial 0 ESN translations

Special dial 0 ESN translations are not supported on IP Trunk 3.01 (and
later) trunks because they are not leftwise-unique.

Use IP Trunk 3.01 (and later) route as first choice for Group 3 fax

The IP Trunk 3.01 (and later) gateway supports Group 3 fax modems by
means of T.38 protocol.

Use the traditional PSTN for general modem traffic

General modem traffic (for example, V.36, V.90) cannot be supported on
ITG. The Meridian 1/CS 1000M routing controls must be configured to route
modem traffic over circuit-switched trunks instead of over IP Trunk 3.01
(and later).

Use the ESN TGAR, NCOS, and facility restriction levels to keep general
modem traffic off of the IP Trunk 3.01 (and later) route. Use caution before
setting TGAR=YES in the ESN block in LD 86 since this will impact all trunk
access for ESN calls. New Flexible Code Restriction (NFCR) can be used
to block direct access to trunk routes for stations with CLS = CTD.

When adding IP Trunk 3.01 (and later) trunks to an existing Meridian 1/CS
1000M system, changes to ESN translation should be made last, after the
IP Trunk 3.01 (and later) dialing plan and the entire IP Trunk 3.01 (and later)
network is tested with calls dialed using the Route Access Code. In LD 16,
for prompt CTYP, set to appropriate call type for the IP Trunk 3.01 (and later)
node numbering plan in order to make test calls using ACOD. After the
correct operation of the entire IP Trunk 3.01 (and later) network has been
verified, ESN translations that are intended to be routed through IP Trunk
3.01 (and later) TIE trunks are then changed so as to use the new RLI.

Nortel Communication Server 1000

IP Trunk Fundamentals

NN43001-563

01.01

Standard

Release 5.0

30 May 2007