Call Processing Subsystem - Huawei U-SYS MRS6100 Technical Manual

Technical Manual
U-SYS MRS6100 Media Resource Server
II. Call processing subsystem
This subsystem interprets the MGCP, SIP, and the VXML scripts.
III. Media processing subsystem
This subsystem processes the media streams, including:
Dual tone multi-frequency (DTMF) detection
Audio record and announcement media streams
Transcoding

3.2 Call Processing Subsystem

The MCCU board is responsible for call processing, including
Lower layer interface processing
Transport layer protocol processing
Call control protocol processing.
Figure 3-2 shows the software structure of the call processing subsystem.
Figure 3-2 Software structure
II. Lower layer interface processing
The Ethernet IP interface is the lower layer interface protocol of the call processing
subsystem. The MCCU board processes the media access control (MAC) protocol
and the IP packets.
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3-2
Chapter 3 Software Architecture