Nortel Networks NN43001-314 - Manual (Page 296)

296 Dialing plan configuration
By performing this zone-based digit manipulation, calls from main office
users and Branch Users undergo different routing. Some applications are:
• routing all Branch Users’ calls to the MG 1000B PSTN trunk
• routing Branch Users’ local calls to the MG 1000B PSTN trunk
• routing all Branch Users’ calls to the main office PSTN trunk
• routing Branch Users’ long-distance calls to the main office PSTN trunk
Special considerations apply in the case where a single Access Code
is used for both on-net and off-net calls, especially when UDP is used.
Routing of on-net and off-net calls is normally different. The Call Server
ESN Special Number provisioning (refer to Notes 1 and 2 on
Note 1: ) and
Gatekeeper Numbering Plan Entry provisioning (refer to the note on Note: )
should be used to provide this different routing.
In the case where a single Access Code is not shared, that is,
where one Access Code is exclusively used for UDP on-net dialing,
standard procedures should be used. Refer to Dialing Plans Reference
(NN43001-283).
For a given Branch Office, there may be more than one zone defined at the
main office. Therefore, different Branch Users may receive different routing
treatments.
The combination of zone-based digit manipulation and CS 1000 Release
5.0 routing capabilities can be used to achieve many other routing outcomes
for Branch User calls.
CLID composition
Digital manipulation is commonly used for digit insertion and deletion. It
is also used for call type conversion before out-pulsing the digits to the
Virtual Trunk.
The IP Special Number (ISPN) parameter in the ESN data block ensures
the CLID is formed correctly when a call-type is converted from its original
type (such as International, National, or SPN) to CDP/UDP/SPN format.
Conversion to CDP/UDP/SPN format ensures that the call-type stays in
the Private/Special Number domain.
The ISPN parameter is configured in LD 86. By default, it is set to NO.
If ISPN is NO, the CLID is formed based on the CTYP parameter of the DMI
data block, and INST digits are inserted.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.