Main office, Branch office – Nortel Networks NN43001-314 User Manual
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Appendix D Off-net dialing plan configuration example
Main office
At the main office Call Server:
1. The call is recognized as originating from a Branch User in Zone 1.
2. Based on the ZACB property, the Call Server recognizes that the call
has been dialed with AC1, and that zone-based digit manipulation must
be performed.
3. The ZDP digits are inserted after the Access Code, changing the digit
string to "1 101 87654321".
4. The digits are translated by the ESN feature.
a. ESN recognizes that the number has been dialed using AC1, so
"101" is a Special Number.
b. RLI "1" is associated with SPN "101", so route "18" and DMI "10"
should be used.
c. DMI "10" sets the call type to SPN. Because ISPN=YES for DMI
"10", CLID is based on the call type defined by the CLTP field in
SPN "101", which is INTL.
5. The call is routed to route "18", the Virtual Trunk. The digit string sent by
the Call Server is "101 87654321", as the Access Code is not sent out.
NRS
The NRS recognizes the digits "101" and call type of PrivateSpecial, and
identifies the endpoint as the Branch Office. It then routes the call to the
Branch Office.
Branch Office
At the MG 1000B Small System Controller:
1. The call comes in on the Virtual Trunk. The INAC field in the Route
Block of the Virtual Trunk is configured as "YES", and call type SPN
is associated with ACI in configuration of NET_DATA (LD 15). AC1 is
inserted at the beginning of the digit string, changing the digit string to
"1 101 87654321".
2. The digits are translated by the ESN feature.
a. ESN recognizes that the number begins with AC1, so "101" is a
Special Number.
b. RLI "4" is associated with SPN "101", so route "11" and DMI "12"
should be used.
c. DMI "12" deletes the first three digits of the digit string, and sets the
call type to International.
3. The call is routed to route "11", the PSTN trunk.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314
01.02
Standard
Release 5.0
20 June 2007
Copyright © 2007, Nortel Networks
.