4000 Router Series Interface Module Guide

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• The VCPM module installed on the MSCR/MSCB of an MSR50 series router is different from that

installed on the FIC-VE1/FIC-VT1 module. Therefore, they cannot be used interchangeably.

• The FIC-VE1/FIC-VT1 is used with a VPM module installed. The specifications and number of VPM

modules needed depend on the number of calls.

• The VPM modules installed on the MSCA of the MSR50 series routers are the same as that installed

on the FIC-VE1/FIC-VT1 modules.

• If you install more than two FIC-VE1/FIC-VT1 modules on an MSR50 series router, you need to add

another VCPM module on the MSCA/MSCA.

VCPM

Introduction

Voice co-processing module (VCPM) provides transmission channel between DSP strip and system

memory for voice data, thus implementing TDM HW exchange for each PCM data voice channel.

VCPM module is required for voice communications of routers.

Interface attributes

Table 194 Interface attributes of the VCPM module

Attribute Description

Connector Double-edge connector

Interface type PCI 2.2, EHPI

Data transmission

rate

• Operating rate for PCI bus: 33 MHz/66 MHz

• Maximum bandwidth: 264 Mbps

• BURST transmission: Up to 1 KB of data can be transmitted once and the maximum

number of bytes transmitted can be configured.

Interface LEDs

There is no LED on the VCPM module and display of the status of the module is implemented through the

VCPM interface LED on the main board of the router.

The following table describes the LEDs on the main board:

Table 195 Description on the LEDs

LED Descri

tion

VCPMx

• Green: VCPM module is in the slot and is operating normally. Yellow: VCPM module is in

the slot but cannot be accessed by the router.

Note:

X means the slot number VCPM module LED is on.

Installing/removing a VCPM module

VCPM module should be installed in the VCPM slot on the main board of an MSR20-40 or MSR30 router,

or in the VCPM slot on the MSC module of an MSR50 router. The board that provides VCPM slots is

referred to hereafter as mother board. Suppose the mother board is uninstalled and put on the

workbench.