Huawei IAD108A User Manual page 31

User Manual
U-SYS IAD108 Integrated Access Device
Table 1-3 Functions of modules in IAD108
Module
Management, maintenance
and operation module
Service access module
SPC service processing
module
VoIP service processing
module
Protocol processing
module
Bottom layer drive module
It is responsible for maintenance, operation and
management of the whole IAD108 system.
It implements the selection, summary and report of
analog user and digital user information, and
transmits the messages issued by the service
module.
It establishes and maintains the SPCs between the
different users in the same IAD108, or different
users in different IAD108s.
It controls the interaction of user signalings and the
Time Division Multiplexing (TDM)/ Digital Signal
Processing (DSP) user module, and implements
the interconnection with the Media Gateway
Controller (MGC).
It implements the processing of MGCP/H248
protocol stack and the adaptation of protocols.
It drives various function chips on the CSP.
1-7
Chapter 1 System Overview
Function