182 Planning and management
For more information about CDP,refer to Dialing Plans Reference
(NN43001-283). For details on other Numbering Plan options, refer to
Communication Server 1000S: Overview (NN43031-110). For more
information on ESN, refer to "ESN Access Codes" (page 182).
Emergency Services
Tounderstand Emergency Ser vice Access (ESA), see "Emergency
services" (page 172). The main office Call Server supports only one
Emergency Service DN (ESDN). If the ESDN is different at the Branch
Office and at the main office, or if there is more than one emergency
number, then a Special Number (SPN) must be configured to route ESA
calls from the MG 1000B telephone to the MG 1000B PSTN. Refer to
"Emergency Services configuration" (page 315).
Zones The Branch Office feature enables IP Phones in more than one geographic
location to have dialing plan behaviorsthat are localized to the location
of the telephone rather than the location of the main office Call Server.
Use different zone numbers for differentbranch offices. For additional
information, see the Communication Server 1000E: Planning and
Engineering (NN43041-220) NTP.
Music on Hold
For Branch Users in Normal Mode, the main office provides music to the
user if Music on Hold is provisioned. The use of the G.729A, G.729 +VAD
option, and G.723 codecs between the main office and the MG 1000B
impacts the music quality.
ESN Access Codes
ESN data is configured with two Access Codes called AC1 and AC2.
AC1 normally applies to long-distance calls, whether placed on or off
the customer’s private network (for example, dialing "6"). AC2 normally
applies to local calls (for example,dialing "9"). For more information, refer
to Electronic Switched Network: Signaling and Transmission Guidelines
(NN43001-280).
Provisioning the IP Phones
Users must provision the IP Phone on any Call Server that provides service
to that telephone. There is no automatic data synchronization between the
main office Call Server and the MG 1000B Call Server.
There is a procedure in TM 3.01 to transfer IP Phone data from the main
office to the Branch Office. "Transferring IP Phone data using TM 3.01"
(page 274)
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright© 2007, Nor tel Networks
.