Avaya BCM 4.0 Networking Przewodnik Konfiguracji Strona 403

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Chapter 44 VoIP trunk gateways 403
BCM 4.0 Networking Configuration Guide
Figure 129 Internal call from Meridian 1 tandems to remote PSTN line
Since the VoIP trunks are configured into line pools, you can assign line pool codes to users who
have been assigned access to the VoIP trunks. However, if you intend to set up your system to use
fallback, so that calls can go out over PSTN if the VoIP trunks are not available, you must use
routes and destination codes to access the VoIP trunk line pools.
Local gateway programming
The VoIP trunk access point at each system is called a gateway. The gateway to your system, the
local gateway, determines how incoming and outgoing calls will be handled.
The H323 and SIP Media Parameters tabs determine a number of system settings. These values
need to be coordinated with the other systems on the network to ensure that all features work
consistently across the network. Media parameters include setting:
the order of preferred codecs
voice activity detection
jitter buffer size
codec payload size
IP fax transmission availability on the network
The local gateway parameters define how the BCM prefers call signaling information to be
directed through VoIP trunks. Call signaling establishes and disconnects a call.
If the network has a gatekeeper (H.323 trunks only), the BCM can request a method for call
signaling, but whether this request is granted depends on the configuration of the gatekeeper.
Ultimately, the gatekeeper decides which call signaling method to use.
H323 Settings include:
fallback to circuit switched availability
Head office
VoIP trunk
(with MCDN, optional)
Node B
Calgary
Node C
Ottawa
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