Voice Network Modules

Connecting Cisco Voice Network Modules to the Network

Revised: May 1, 2008, OL-12812-01

This guide describes how to connect Cisco voice network modules to your network. It contains the following sections:

•Voice Network Modules, page 1

•2- and 4-Channel Voice Network Modules, page 2

•4-,8-, and 48-ChannelHigh-Density Voice Network Modules, page 2

•60-ChannelHigh-Density Voice Network Module, page 3

•Voice Network Module LEDs, page 7

•IP Communications High-Density Digital Voice or Fax Network Module, page 8

•Related Documents, page 16

•Obtaining Documentation, Obtaining Support, and Security Guidelines, page 17

The voice functionality built into Cisco IOS software enables modular access routers to carry voice traffic, such as telephone calls and faxes, as Voice over IP (VoIP) simultaneously with data traffic over LANs, MANs, and WANs. Voice network modules convert telephone voice signals into a form that can be transmitted over an IP network.

Voice network modules convert telephone voice signals into a form that can be transmitted over an IP network. These modules have one or two slots for installing supported interface cards. Voice interface cards (VICs) or voice/WAN interface cards (VWICs) installed in the voice network module provide physical connections to the telephony equipment or network, and are connected using the appropriate cables.

You can install one voice interface card in a 1-slot voice network module, and two voice interface cards in a 2-slot module.

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