Mpi network interface module architecture, Mux module, Mpi network interface module architecture -44 – Polycom DOC2237A User Manual

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Chapter 4 - Hardware Description

4-44

MPI Network Interface Module Architecture

Figure 4-25, “MPI-8 Network Interface module architecture” shows the
architecture for the MPI-8 Network Interface Module.

Figure 4-25: MPI-8 Network Interface module architecture

MUX Module

The MUX Module multiplexes and demultiplexes the audio, video, data, and
control information. Information arrives at the MUX Port in Nx56/64 Kbps
channels formatted according to the ITU-T H.221 standard for framing
(“Frame Structure for a 64 Kbps to 1920 Kbps Channel in Audiovisual
Teleservices”).

TDM Interface

TDM I/F

Card

Manager

Front

Panel

LEDs

Watch

Dog

HDLC Interface

Bit Rate I/F #1

Bit Rate I/F #2

PHYI/F

H.323 video conferences do not require a MUX card. The H.323 card has a
build in MUX functionality.