Polycom DOC2237A - Manual (Page 69)

MGC Hardware and Installation Manual
3-7
Information Flow
Figure 3-7 shows the flow of information within the system.
Figure 3-7: Signal flow process
Information enters the MGC units from the telecommunications network via a
PBX or CSU, and into the Network Interface Module. The information is then
transferred to the MUX Module via the Internet.
The MUX Module transfers the control information to the Main Control
Module via the Control Bus. The control information is then processed by the
Main Control Module and a control response forwarded via the Control Bus
to the appropriate MUX Ports.
The MUX Module is not used with the H.323.
I/O Card I/O Card
H.323 Network
Interface
Module
(includes MUX)
ISDN/ATM/MPI
Network
Interface
Module
MUX
Module
Video
Module
Data
Module
Main
Control
Module
Audio
Module
H323
ATM
MPI