H.323 is an Internet standard set of protocols for the transmission of real-time audio, video, and data using packet-switching technology. Experience Portal uses H.323 connections with an Communication Manager to handle Voice over IP (VoIP) telephony.
To provide VoIP capabilities, H.323 uses:
Terminals, which can be PCs or dedicated IP softphone devices.
Gateways, which “translate” communications between dissimilar networks, such as IP networks and Public Switched Telephone Network (PSTN). In the Experience Portal system, the Communication Manager handles this function.
A gatekeeper, which acts as the control center for all H.323 VoIP interactions in the system. In the Experience Portal system, the Communication Manager handles this function.
Important:
You must use Communication Manager 3.1 build 369 or later with the Avaya Special Application SA8874 feature. This combination provides:
VoiceXML supervised transfers. Without the SA8874 feature, supervised transfers have no access to call progress information and behave like a blind transfer.
The Application Interface web service for outbound calling. Without the SA8874 feature, the web service has no access to call progress information and may start a VoiceXML application even when the connection attempt receives a busy signal.
Note:
The SA8874 feature comes with Communication Manager version 3.1 or later, but it requires a separate license before it can be enabled.
