4000 Router Series Interface Module Guide

135

Removing a VCPM module

1. Remove the three fastening screws on the VCPM module.

2. Remove the VCPM module from the .mother board. Do not overexert when removing the VCPM

module because the connector of the daughter board is still on the mother board.

3. If no SNDE module is to be installed, remove the three metal standoffs

Installing a VCPM module

1. Confirm the correct position of the VCPM module on the mother board.

2. Fasten the three metal standoffs on the mother board.

3. Install the VCPM module on the mother board and fasten it with three screws. During installation,

align the two connectors under the daughter board to the connectors on the main board to avoid

damage to the connectors.

VPM

Introduction

Voice Processing Module (VPM) functions encoding/decoding, echo cancellation (EC) and comfortable

noise generation (CNG) of voices.

Interface attributes

Table 196 Interface attributes of the VPM module

Attribute Description

Number of calls

supported

• 8

• 16

• 24

• 32