Cisco 2600 Series Operation Manual page 99

Connecting Voice Network
Modules to a Network
Voice network modules convert telephone voice signals into a form that can be transmitted
over an IP network. Voice interface cards provide the connection to the telephone
equipment or network.
This chapter contains the following sections:
•
2-Channel and 4-Channel Voice Network Modules on page 9-1
•
Voice Network Module LEDs on page 9-3
2-Channel and 4-Channel Voice Network Modules
This section explains how to connect 2-channel and 4-channel voice network
modules—(Cisco part numbers NM-1V and NM-2V) in Cisco modular routers. (See
Figure 9-1 and Figure 9-2.)
You need both a voice network module and a voice interface card for a voice connection.
You can install one voice interface card in a 2-channel voice network module, and two voice
interface cards in a 4-channel module. At least one other network module or WAN interface
card must be installed in the router to provide the connection to the IP LAN or WAN.
WAN and voice interface cards are described in the Cisco WAN Interface Cards Hardware
Installation Guide publication.
C H A P T E R
Connecting Voice Network Modules to a Network 9-1
9