Cisco 26/3600 2 PORT DATA INTERFACE Specification Guide

Cisco Systems, Inc.

Page 1 of 13

Data Sheet

Low Density Voice/Fax Network Modules

for the Cisco 2600, 3600 and 3700 Series Routers

Updated August 2003

Cisco 2600, 3600, and 3700 low density voice/fax network modules provide

enterprises, managed service providers and service providers the ability to directly

connect the PSTN and legacy telephony equipment to existing Cisco 2600, Cisco

3600, and Cisco 3700 routers. This provides immediate multiservice advantages,

such as telephony toll bypass, new packet telephony applications, and full gateway

integration within a Cisco AVVID architecture.

Figure 1

NM-2V Module with
One Two-Port FXO VIC
with battery reversal
detection and Caller ID
support (VIC-2FXO-M1)

The low density voice/fax network modules

for the Cisco 2600, 3600, and 3700 series

multiservice access routers enable packet

voice technologies including VoIP (H.323,

MGCP and SIP), VoFR and VoATM. Cisco

voice solutions provide the means for

integrating both voice and data within a

single network allowing users to take

advantage of services, such as toll-bypass,

without sacrificing voice quality. Cisco

IOS

software also incorporates built-in

quality-of-service (QoS) features along with

standards-based encapsulation providing

efficient direct transport of both voice and

fax over IP, Frame Relay and ATM

networks. These Cisco IOS solutions enable

time-sensitive voice traffic to be moved

across even low-bandwidth WAN

connections with the priority and quality

voice/fax demands. Transporting voice over

IP networks continues to provide transport

flexibility since IP can be routed across a

multitude of WAN technologies (leased

lines, Frame Relay, and ATM) along with

providing direct connectivity to the desktop.

These low density/fax network modules

also provide the gateway to Cisco AVVID

architectures for calls to and from the PSTN

and legacy telephony equipment (including

PBXs, analog telephones, fax machines and

key systems). Users can deploy networks

which leverage investments in existing

legacy telephony equipment while also

deploying and integrating IP telephony

immediately or in the future. These network

modules enable users to operate at any

point on the voice, video & data integrated

infrastructure spectrum while incrementally

adding connections to both legacy

telephony and IP telephony on these

networks.

The low density voice/fax network modules

slide into Cisco 2600, 3600, and 3700

network module slots and contain either

one or two voice interface card (VIC) slots.

The VICs are daughter cards that slide into