On-Net Dialing Plan - Nortel Remote Gateway 50 Configuration Manual

Page 168 of 258

On-net dialing plan

553-3001-207 Standard 2.00
Dialing Plan configuration
Note: The SRG only supports only one dialing plan option at a time.
CDP and UDP dialing plan options cannot be configured at the same time
in the same system.
The SRG supports the following dialing plans:
• Coordinated Dialing Plan (CDP) – BUID is the same as the Directory
Number (DN)
• Uniform Dialing Plan (UDP) – Location code is added to the DN for the
BUID
Note 1: Nortel recommends that the SRG use CDP.
Note 2: CDP Terminal Numbers (TNs) can be activated on the other
systems if the user moves and wants to retain their phone number. SRG
does not support Transferable Directory Numbers (TNDN) due to
differences in dialing plans and the small range of DNs available on the
SRG.
For specific examples for CDP and UDP dialing plans, refer to "Dialing plan
examples" on page
Once the call is sent over the IP network, the call is routed to the SRG, which
uses the NRS (H.323 Gatekeeper) to route the call. The NRS (H.323
Gatekeeper) translates the address form a telephone number to an IP address,
and authorizes the call.
Specific dialing plan configuration is required for IP Phones to properly
select a main office or a branch office that provides access to the PSTN for
the originating IP Phone. A common configuration might be:
• SRG users select the SRG PSTN for local calls.
• Main office users select the main office PSTN for local calls.
• All users select either the main office or SRG PSTN for long-distance
calls to minimize toll charges.
• calls configured to minimize toll charges.
January 2006
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