Nortel Networks NN43001-314 - Manual (Page 176)

176 How the Branch Office feature works
• Calling Line Identification (CLID) on outgoing PSTN calls from the main
office or the Branch Office are modified from four to six digits. Additional
digits can be added using the capabilities of CLID.
• The calling party display always shows the full-length DN of the
originating party.
• The display on the calling telephone shows the called DN as dialed.
After the call is established or modified, the display changes in
accordance with existing features.
MG 1000B Core interoperability
MG 1000B Core to MG 1000B Core interoperability is fully supported
between CS 1000 and Multimedia Communication Server 5100 (MCS
5100). A Network Connection Server (NCS) is required for Branch Office,
Virtual Office, and Geographic Redundancy features to work.
Alternatively, Virtual Trunks can utilize the MCS 5100 H.323 Gatekeeper.
In this case, at least one dedicated Signaling Server is required to run as
the primary CS 1000 NCS, where the H.323 endpoints are configured as
non-RAS endpoints because Virtual Trunks will establish a connection
with MCS, not NCS. During endpoint configuration on that NCS, set the
NCS option to On; otherwise, all incoming requests from this endpoint are
rejected. Set the Route cost to 1. Only those routes with the cost factor 1
are used for set redirections. However, the private numbering plan must be
configured on both the MCS 5100 H.323 Gatekeeper and the NCS (CS 1000
H.323 Gatekeeper). Without proper NCS server configuration, redirection to
the main office does not work. For further information on configuring the
Branch Office in the MCS database, refer to MCS documentation.
Network Wide Redundancy Phase II and Network Music
The Network Wide Redundancy Phase II feature interacts with the Branch
Office feature. If you configure a Branch Office as an endpoint in the NRS,
and an IP set in a node in an IP Network has NUID and NHTN configured
to point to a Branch Office, the set is redirected to the Branch Office and
registered as a Branch Office set.
The Network Wide Redundancy Phase II feature extends the Network
Wide Redundancy sub feature of the Geographic Redundancy feature
introduced in Release 4.0 to small systems to provide survivability of IP
telephones normally registered with a CS 1000/2100. With this solution, you
can register a number of IP sets with the CS 1000 and to receive telephony
services from it. Other IP sets are normally registered with a remote CS
1000/2100 to receive telephony services from the 2100/CS 1000. In the
case the link to the remote CS 1000/2100 or to the remote 2100/CS 1000
itself goes down, the IP telephones survive by registering with the local CS
1000, which provides telephony services while the link to the CS 1000/2100
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.