Avaya 1000 Installation And Commissioning Manual page 72

How the Branch Office feature works
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 to supported systems to provide survivability of IP
telephones normally registered with a Communication Server 1000/2100. With this solution, you can
register a number of IP Phones with the Communication Server 1000 and to receive telephony
services from it. Other IP Phones are normally registered with a remote Communication Server
1000/2100 to receive telephony services from the CS 1000/2100. If the link to the remote CS
1000/2100 or to the remote CS 1000/2100 itself goes down, the IP Phones survive by registering
with the local CS 1000, which provides telephony services while the link to the CS 1000/2100 or the
CS 1000/2100 itself is down. When the link to the remote CS 1000/2100 or to the remote CS
1000/2100 itself is restored, the IP Phones are automatically redirected back to the remote CS
1000/2100 to receive telephony services. Support for this feature is available in the MG 1000B to
provide survivability to IP Phones normally registered with a CS 1000/2100.
The Network Music feature connects a Central Audio Server attached to a CS 1000/2100 as the
music source on demand to provide music to parties (be it through a CO trunk, TIE trunk, FX trunk,
WATS trunk, virtual trunk, or extension) on hold in a Communication Server 1000. The Central
Audio Server is accessed through a call to an external DN over an H.323/SIP virtual trunk or a TDM
trunk. The virtual trunk or TDM trunk connects to a network music trunk through an analog TIE
trunk, the Network Music TIE trunk. The virtual trunk implemented with an XUT pack (NT8D14) and
a network music agent. Two trunk units in the XUT are used, one is configured as a Network Music
trunk, the other is configured as an incoming-only Network Music TIE trunk. The two trunk units
connect back to back, (for example,TIP lead to TIP lead and Ring lead to Ring lead). The TIE trunk
is auto terminated to the network music agent, which is a PCA with a target PCA DN to ring the
external DN to reach the Central Audio Server. When a party is put on hold, the party connects to
the Network Music trunk, the capture of which initiates an incoming call to the Network Music TIE
trunk. The incoming TIE trunk call is redirected to the Central Audio Server through the network
music agent.
If an MG 1000B is to provide survivability, you require the SBO package (390).
The Network Music Service feature requires the packages shown in Table 27: Network Music
Service Feature Packaging Requirements.
Figure 17: Network Music Service Feature Packaging Requirements
For additional information, see Avaya System Redundancy (NN43001-507).
Branch Office Installation and Commissioning
72
Comments? infodev@avaya.com
June 2014