Huawei U-SYS IAD208E User Manual page 23

User Manual
U-SYS IAD208E(M) Integrated Access Device Chapter 1 System Overview
Module
Service access
module
SPC service
processing module
VoIP service
processing module
Protocol processing
module
Bottom layer drive
module
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
IAD208E(M), or different users in different
IAD208E(M)s.
It controls the interaction of user signaling
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.
Huawei Technologies Proprietary
1-8
Function