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Cisco

for Voice Gateway Routers

The Cisco Conferencing and Transcoding

for Voice Gateway Routers feature provides

enhanced multiservice support for Cisco

routers in a Cisco CallManager network.

This is accomplished by enabling

audioconference and transcode functions in

access routers. This single-package solution

simplifies deployments and eases

administration. Tangible cost savings are

realized with the location of conference

resources in the branch to reduce WAN

utilization. Costs are further reduced with

the use of transcode services to reduce

bandwidth needs.

The Cisco telephony solution is part of

Cisco AVVID (Architecture for Voice,

Video and Integrated Data) and provides a

full-featured telephony system running on

an IP network. Available on either the

Digital T1/E1 Packet Voice Trunk Network

Module or HDV Transcoding/

Conferencing DSP Farm and operating on

the Cisco 2600, 3600, 3700, and Cisco

VG200 Gateway product lines, the Cisco

Conferencing and Transcoding for Voice

Gateway Routers feature preserves all the

WAN, public switched telephone network

(PSTN), and private-branch-exchange

(PBX) access capabilities provided on these

platforms while adding conference and

transcode functions. As an integrated

solution with Cisco CallManager, features

such as Cisco CallManager failover,

reporting, and management are all

provided.

In a traditional circuit-switched voice

network, all voice traffic goes through a

central device (for example, PBX).

Audioconference services are provided

within this centralized device. Because IP

phones send their voice directly between

phones, a network-based conference bridge

is required to facilitate multiparty

conferences. In an IP telephony network

using Cisco CallManager, the Cisco

Conferencing and Transcoding for Voice

Gateway Routers feature provides the

conference bridging service. The following

conferencing features are supported:

• Cisco CallManager meet-me and ad-hoc

conferences with up to six participants

• Up to 15 six-party conferences on a

single Digital T1/E1 Packet Voice Trunk

Network Module or HDV Transcoding/

Conferencing DSP Farm