Nortel Remote Gateway 50 Configuration Manual page 177

LD 117 – Define the zone digit manipulation for the branch office zone at the main
office.
Command
CHG ZDP <zone> <DialingCode1> <DialingCode2> <DialingCode3>
Main Office Configuration for Survivable Remote Gateway 50
2 Configure the ZDB property for the branch office zone in the main office.
Refer to IP Peer Networking: Installation and Configuration (553-3001-
213).
Description
Define the dialing plan for the branch office zone, where
DialingCode1, DialingCode2, and DialingCode3 are inserted into
the dialed digits between the Access Code and the remainder of
the dialed number.
The ZDP and ZACB (step 1 on
configure the digit manipulation behavior of the branch office zone.
The ZDP property is inserted between the Access Code specified in
the ZACB command and the dialed digits. This zone-based digit
manipulation allows the main office Call Server and the network NRS
to distinguish the SRG users' calls from the main office users' calls,
and route them accordingly. The digit manipulation occurs before any
digit processing in the main office Call Server or NRS.
Note: If DialingCode1, DialingCode2, or DialingCode3 are already
present in the dialed digits, then they will not be re-inserted.
Nortel recommends that the ZDP attribute for each branch office
zone be set to a unique non-dialable number within the dialing plan
(for example "1019" or "999"). This unique non-dialable number can
then be used, when configuring the main office ESN Special Number
(step 4 of Procedure 11 on
(H.323 Gatekeeper) (Procedure 12 on
to the branch office for connection to the local PSTN.
For example, assume AC1 = 1, AC2 = 2, ZACB = AC1 AC1, and
ZDP = 101.
If an branch office user dials "1 87654321", zone digit manipulation
occurs because AC1 was dialed and ZACB = AC1 AC1. ZDP is
inserted in the dialed digits to form a digit string of "1 101 87654321".
The call is routed differently than with the digits "1 87654321". ESN
configuration at the main office Call Server (step 4 on
Dialing Plan configuration
page 175) properties are used to
page 181) and the NRS
page
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184), to route the calls
page 181)
Configuration Guide