Avaya BCM 4.0 Networking Konfigurationsanleitung Seite 368

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368 Chapter 37 Private networking: PRI and VoIP tandem networks
N0060606N0060606
Figure 122 Multiple BCMs network diagram
To set up a network of BCMs
1 Ensure that the existing network can support the additional VoIP traffic.
2 Coordinate a Private dialing plan between all the systems.
3 On each BCM:
Set up outgoing call configuration for the VoIP gateway.
Set telephones to receive incoming calls through target lines.
Configure the PSTN fallback and enable QoS on both systems.
This system uses fallback to PSTN so calls can be routed across the PSTN connection if VoIP
traffic between the BCMs becomes too heavy.
If only one of the BCMs in a network has a line to the PSTN network, all public calls from other
systems are funneled through the system with the PSTN connection and all communication
between the systems occurs over VoIP trunks. To facilitate this system, you need to ensure that the
destination codes on the non-PSTN system point to the system connected to the PSTN, and then, to
the PSTN. On the PSTN-connected system, the system and destination codes must be configured
to recognize and pass public calls from the other system out into the PSTN network. Since the
receiving PSTN sees the calls as remote dial-ins, ensure that the correct remote access packages
have been established for the VoIP trunks.
This also means that if the VoIP trunks are inaccessible between the systems, there is no provision
for a fallback route.
WarehouseHead Office
System
telephone
BCM
System
telephone
Company
Remote Office
remote
2004 IP phone
2004
IP phone
2004
IP phone
2050 IP phone
PSTN
(fallback
route)
Intranet
VoIP trunk
server
router
router
router
BCM
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