IMG 1010 - SIP 3PCC - Third Party Call Control
The IMG supports the establishment of a session by a third party "controller" such as an application server or a Session Border Controller (SBC) allowing the IMG to integrate with services like auto attendant, conferencing, and unified messaging.
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Seamless IMG integration with SIP application servers, enabling the IMG to be part of a larger service set.
More robust inter-operability with other application-specific SIP devices such as for operator interaction, fax servers, media servers.
Avoid use of a front-end SIP device to delay media prior to SIP signaling reaching the IMG.
Diagram
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