Polycom DOC2238A Bedienungsanleitung PDF herunterladen (Seite 106)

Chapter 4 - Hardware Description

4-26

The MPI-4/8 Network Interface Module

MPI is an acronym for the Multi Protocol Interface card. The MPI-8 is a serial

communications interface card that uses certain protocols to communicate to

endpoints, “Data Terminal Equipment” (DTE), or “Data Communications

Equipment” (DCE). The protocols that it uses are RS-449, RS-530, V.35, and

RS-366, which is a dialing protocol.

The MPI-4/8 Network Interface Module is connected to the DCE (supplied by

the customer) via the MPI box. The front panel of the MPI-4/8 network

interface contains two 160-pin connectors.

Figure 4-14: MPI-4/8 Network Interface Module front panel

Connection to the

160-pin connector on

the front panel of the

MPI box

Connection to the

160-pin connector on

the front panel of the

MPI box

A

B

MPI-8

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