Dialogic Vision 1000 Video Gateway Administration Manual

2. Overview of the Dialogic® Vision 1000 Video
Gateway
Video Gateway overview
The Video Gateway is a CCXML-based call server that provides call control and transaction
capabilities for calls made between the PSTN and IP networks. The Video Gateway provides
the following functionality:
� Supports the SIP, ISDN, ISUP, BICC, SS7, and SIGTRAN protocols.
� Processes audio information, or both audio and video information, depending on the
model.
� Terminates T1/E1 TDM trunks.
� Terminates 3G-324M calls over IP connections.
� Defines routes using CCXML applications.
� Optionally provides in-band DTMF support.
� Optionally connects incoming faxes to a third-party T.38 server.
� Optionally provides fast call setup techniques to speed up 3G-324M call setup time.
� Produces detailed event logs with multiple information levels.
� Provides a web-based console, called the Dialogic® Vision Console (also referred to
as "Vision Console" in this manual), to configure and manage the gateway.
� Provides an SNMP interface for monitoring application usage and server health.
The Video Gateway is installed as a daemon on Linux machines and is composed of the
following components:
� Signaling protocols and models
� Media capabilities
� CCXML scripting engine
� SNMP agent and sub-agents
� Fast call setup
These components are based on specific hardware support, including media boards and
signaling boards.
Signaling protocols and models
The Video Gateway can implement the following signaling protocols:
� ISDN, which is available with the ISDN audio and ISDN video models.
� ISUP, which is available with the ISUP audio and ISUP video models. These models
are available with one or more signaling servers.
The Video Gateway uses SIP/RTP signaling to interface with the IP network. For more
information, see ISDN models and ISUP models.
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