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Cisco VGD 1T3 Voice Gateway Overview
The Cisco VGD 1T3 is a high-density voice gateway with up to 1 Channelized T3 (CT3) of voice over
IP (VoIP) capacity in only two rack units (2RUs) and provides best-of-class voice and fax services.
The Cisco VGD 1T3 Voice Gateway is intended for deployment in large enterprises that require CT3
termination for VoIP with support for Cisco Unified Communications Manager and Cisco Voice Portal
applications using H.323, Session Initiation Protocol (SIP), and Media Gateway Control
Protocol (MGCP). The Cisco VGD 1T3 Voice Gateway can also be used for rich media services such as
CUCM-controlled Media Termination Point (MTP), transcoder, RSVP agent, and conference bridge.
This chapter provides information about the following:
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Basic Hardware Architecture
The Cisco VGD 1T3 chassis supports one DFC (CT3) card and multiple High-Density Packet Voice
Feature Cards (VFCs). The DFC card provides the channelized T3 (CT3) interface. The High-Density
Packet VFC (product number VGD-FC) supports up to six high-density packet voice/fax digital signal
processor (DSP) modules (product number VGD-PVDM2-64).
The High-Density Packet VFC supports CT3 configurations. The High-Density Packet VFC is designed
to work with basic software configurations without requiring specific configuration changes.
Cisco VGD 1T3 Voice Gateway Feature List
Table 8
VGD 1T3 Voice Gateway. Features that are introduced in a particular release are available in that and
subsequent releases.
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Basic Hardware Architecture, page 29
Cisco VGD 1T3 Voice Gateway Feature List, page 29
is a feature roadmap that lists voice gateway features by Cisco IOS release for the Cisco
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