Nortel Networks TP-1610 SIP user manual Support for RPI Header, Configuration of NPI/TON

Mediant 2000 SIP

Note: Usually each E1/T1 span is configured as a separate trunk group.

Different Domain names, according to the originated trunk group (or E1/T1 spans), can be determined via the Tel to IP Routing table.

To enable different domain names add the following parameters to the ini file:

AlwaysUseRouteTable = 1

IsProxyUsed = 1

AddTrunkGroupAsPrefix = 1

NumberMapTel2IP = *, 1

The parameter ‘AddTrunkGroupAsPrefix’ is set to differentiate incoming calls, based on the trunk from where the call arrived (it is assumed that each trunk group is composed of a single trunk) and use the Tel to IP Routing table or the Prefix parameter in the ini file to link each trunk to a different domain name. Finally, ‘NumberMapTel2IP’ is set to remove the leftmost digit from any called number (the previously added trunk group ID).

For example:

TrunkGroup_1 = 0/1-24

TrunkGroup_2 = 1/1-24

TrunkGroup_3 = 2/1-24

Prefix = 1, example1.domain

Prefix = 2, example2.domain

Prefix = 3, example3.domain

In the example above, all calls that are originated in trunk 1 (associated with trunk group number

1)are sent to example1.domain. An incoming ISDN call, from trunk number 1, with called number 1234000, generates the following SIP message:

INVITE sip:1234000@example1.domain;norteltrkgrp=1;

8.13.1.3 Support for RPI Header

Support for Remote Party ID (RPI) header containing proprietary RPI-TON, RPI-NPI, privacy and screening parameters (EnableRPIHeader = 1).

Configuration of NPI/TON

Configuration of the calling number’s NPI/TON values for outgoing IP ISDN calls. If the calling number’s NPI/TON values aren’t provided in the Remote-Party-ID (RPID) header (received with the INVITE message) and are also not configured in the source number IP to Tel Manipulation table, then the calling number NPI/TON is set equal to the called number’s NPI/TON.

NPI/TON values for the called number are defined in the RPID header or set by Number manipulation rules. If both are defined, the latter takes precedence over the former.

To configure a specific called number NPI/TON according to domain name and trunk group, take these 2 steps:

1.Define RemovePrefix = 0, forcing the called number to include, as prefix, the Domain name and Trunk Group (this prefix can be used to define specific NPI/TON values), for example:

nortelnetworks.com/TrunkGroup32145551234

Mediant 2000 SIP User’s Manual 160 Document #: LTRT-72504