ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 135)

7. Product Specification
MSAP2000 Technical Manual V3.0 7-28
7.11. Packet Voice Module (PVM)
Overview
The Packet Voice Module (PVM) enables MSAP2000 to be connected to
soft-switch in the NGN network. The PVM will provide various vo-coders,
handle the voice packets, process the VoIP protocols and also transform
the signaling. When migrating from the traditional TDM network to NGN, the
subscribers’ modules in the MSAP2000 will still be reused
Various VoIP protocols such as MGCP, SIP and H.248 (MEGACO) will all
be supported by PVM to communicate with AMGC for call control. In order
to increase the reliability of the packet network, PVM can be used in N+1 or
N:1 protection schemes in MSAP2000, so no interruptions can occur to
subscribers’’ services when protection switch takes place.
Features
And
Benefits
„ Panel LEDs will indicate status, faults, alarms, and state of connection
„ CIT interface allows the capture VoIP session information
„ Dual Fast Ethernet interface to MSC
„ Various wire-line codecs supported
„ Various tone generation to support various dial tone, second dial tone,
ringing tone (ring-back tone), busy tone, ringing current and other
necessary tones for supporting supplementary
„ SIP/MGCP/H.248 VoIP protocols supported
„ ITU-T Q.931 over IUA over SCTP for ISDN Backhaul support
„ TCP/IP, RTP/UDP, RTCP protocols and statistics reports supported.
„ Enhanced call features and various concurrent calls supported
„ Auto-detection and fault reporting
„ Configurable alarm warning reports and system temperature detection
„ Non-volatile
memory devices for performance data and database
storage
Function
Diagram
Application
The PVM is used to interface the soft-switch (or AMGC) to provide the voice
services in the IP network.