Aricent's SIP B2BUA Framework complies with the Multimedia
Call Control Service Control Functionality (MMCC SCF) of the
OSA. It is based on a modular architecture to prevent redundancy
of equipment. The Framework consists of the following components:
The Network Component: Interacts with the Network
Interface. When a SIP message arrives at the B2BUA Framework,
it is first read by the Network Component and then forwarded
to the Stack Component.
The Stack Component: Decodes the incoming SIP message.
The decoded message is then posted to the Multimedia Call
Control Manager.
The Multimedia Call Control Manager (CCM): Is the
entry point for all decoded messages. The application interacts
with the CCM to register event notifications, specifying the
filtering criteria. The CCM also exposes APIs to the application
to enable the application initiate the calls. In addition,
the CCM exposes APIs to monitor the load towards a given destination.
This allows the application to apply 'Load Control' towards
the Gateways.
Multimedia Call: Is a Call State Machine (CSM), which
is executed in the context of the CCM. This CSM maintains
the association between different call-legs belonging to a
call.
The following diagram depicts the architecture
of SIP B2BUA Framework:
Last updated :
October 18, 2006
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