Nortel Networks NN43001-314 - Manual (Page 172)

172 How the Branch Office feature works
3 Program the IP address, subnet mask, and gateway addresses for
the MG 1000B IP Phone.
4 Program the S1 IP Address, action, and retry parameters. The S1 IP
Address is the MG 1000B Node IP Address.
5 Program the S2 IP Address, action, and retry parameters. The S2 IP
Address is the main office Node IP Address.
6 Program the remaining parameters. The IP Phone reboots again.
—End—
If the MG 1000B IP Phone can register with the main office using S1, it is
redirected to the main office TPS and operates as a normal Branch User.
If the MG 1000B IP Phone cannot register with the main office using S1
after the number of programmed S1 retries, it uses S2 to register with the
main office as a regular online main office user.
Multiple Appearance DN (MADN)
IP Phones with the same DN at the Branch Office
When the MG 1000B CP PM processes incoming calls from a local trunk or
from an analog (500/2500-type) or digital telephone, the CP PM determines
if the dialed DN is a Multiple Appearance DN (MADN). If any telephone in
an MADN arrangement is analog or digital, or if one or more IP Phones
are registered in Local Mode at the Branch Office, the call terminates
at the Branch Office. In this case, the analog (500/2500-type) or digital
telephones, and the IP Phones registered to the MG 1000B Core, ring. IP
Phones registered to the main office do not ring.
In other words, if the MG 1000B CP PM can terminate the call to any
telephone in the Branch Office that belongs to the MADN arrangement, the
call does not reroute to the main office.
IP Phones with the same DN at the main office
If a call is made to an MADN at the main office, all MADN appearances,
including those on MG 1000B IP Phones in Normal Mode, ring. Any
appearance can answer the call. MADN appearances on MG 1000B IP
Phones in Local Mode do not ring.
Emergency services
Support for access to emergency services by Branch Users in Normal Mode
is configured at the main office.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.