User`s guide

22 Dialogic
®
Host Media Processing Software Release 4.1LIN Release Guide
Features
3.8 SS7 Support
No new SS7 features are added in this release.
For a list of currently supported boards, see Section 6.2, “Dialogic
®
DSI SS7 Boards and
Dialogic
®
DSI Signaling Servers”, on page 45. For technical specifications, see
http://www.dialogic.com/products/signalingip_ss7components/signaling_boards.htm.
The Dialogic
®
Global Call software supports the development of call control applications
that use SS7 technology. For more information on using SS7 technology, see the
Dialogic
®
Global Call SS7 Technology Guide.
3.9 3G-324M Interface
The 3G-324M technical specification is an umbrella protocol produced by the 3rd
Generation Partnership Project (3GPP). An extension to the ITU-T H.324
Recommendation for 3G mobile phone conferencing, the 3G-324M specification includes
H.245 for session control; H.223 for bit streams to data packets multiplexer/demultiplexer;
H.223 Annex A and B for error handling of low and medium bit error rate (BER) detection,
correction, and concealment; and H.324 with Annexes A and C for operating in a wireless
environment. H.324 Annex K adds support for Media Oriented Negotiation Acceleration
(MONA).
This release supports 3G-324M multimedia sessions over PSTN, as defined in 3GPP
Release 99. It also supports 3G-324M multimedia sessions over IP using the Nb UP
protocol, as defined in 3GPP Release 4.
For more information about the 3G-324M API library, see the Dialogic
®
3G-324M API
Programming Guide and Library Reference.
New Features
New features of the 3G-324M interface include:
H.324 MONA
Accelerates 3G-324M call setup time significantly.
Audio transcoding
Audio transcoding can be performed between audio codecs supported for the 3G-
324M interface and audio codecs supported for the RTP interface.
New video codecs for 3G-324M
MPEG-4 is supported with these characteristics:
• Simple Profile (SP) – Level L0
• Video picture format – QCIF
• Frame rate – Up to 15 frames per second (fps)
• Bit rate – Up to approximately 43 kbps
H.264 is supported with these characteristics:
• Profile and level – Baseline profile, level 1