Nortel Networks NN43001-563 User Manual download pdf (Page 334)

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334 Provisioning IP Trunk 3.01 (and later) in TM 3.1

Figure 129

Example of a complex dialing plan

Gatekeeper-resolved endpoints

The IP Trunk 3.01 (and later) application has two methods of resolving

addresses. The IP Trunk 3.01 (and later) node ﬁrst checks the dialing

plan information using the Address Translation Protocol Module (ATPM).

If no match exists, the IP Trunk 3.01 (and later) node checks to see if a

Gatekeeper has been provisioned. If a Gatekeeper has been provisioned,

the IP Trunk 3.01 (and later) node forwards the applicable H.323 messaging

to the Gatekeeper which attempts to complete the call. If a Dialed Number

(DN) does not match what is stored in the local dialing plan, and if there is

no Gatekeeper is provisioned or the Gatekeeper does not know the number,

the call fails.

Zones

A network zone is a logical grouping of CS 1000M systems with IP Peer

H.323 Gateways, IP Line 3.0, IP Trunk 3.01 (and later), and/or third-party

gateways or endpoints. Network zones can have geographical signiﬁcance;

for instance, a company could conﬁgure one network zone for its east coast

ofﬁces and one network zone for its west coast ofﬁces.

Recommendation

Though not mandatory, Nortel recommends that zones be used for IP Trunk

3.01 (and later).

Nortel Communication Server 1000

IP Trunk Fundamentals

NN43001-563 02.01 Standard

Release 5.5 21 December 2007

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