Cisco 3521, Administrator'S Manual

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Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 1 Overview of the Cisco IPVC 3500 Series Gateway
About Cisco IPVC 3500 Series Gateway Features
Table 1-8 lists features for specific Cisco IPVC 3500 Series Gateways.
Peer-to-peer connectivity The Cisco IPVC 3500 Series Gateway supports
connectivity to the IP network through a
gatekeeper, or directly to a peer device such as
Cisco CallManager.
IP network connections The Cisco IPVC 3500 Series Gateway has one
10/100Base-T Ethernet IP port (on the front
panel) and connects to an IP segment through a
direct connection to a network switch. The
Ethernet ports on the rear panel are for future use.
Table 1-7 Cisco IPVC 3500 Series Gateway Feature Summary
Feature Description
Table 1-8 Cisco IPVC 3500 Series Gateway Feature Specifics
Feature
Cisco IPVC 3540 PRI
Gateway Cisco IPVC 3526 PRI
Gateway Cisco IPVC 3521 BRI
Gateway
Supported ports 2 PRI ISDN port 1 PRI ISDN ports 4 BRI ISDN ports
Supported video
conferencing
protocols H.320, H.323 (using Stack v4.0)
Supported audio
codecs The term audio transcoded video calls refers to the process whereby an audio
stream in a multimedia call can be transcoded from one codec type to another.
Basic and advanced audio coding supported codecs are: G.711, G.722,
G.722.1, G.723.1, G.728
Audio Transcoding
(optional for the
Cisco
IPVC 3540 PRI
Gateway) G.711 (ISDN) < > G.723.1
(IP) for up to 30 voice
channels. G.711 (ISDN) < >
G.723.1 (IP) for up to 60
voice channels. G.711 (ISDN) < >
G.723.1 (IP) for up
to 8 voice channels.
G.711 (IP) < > G.728 (ISDN) for up to 20 audio
transcoded video channels. G.711 (IP) < >
G.728 (ISDN) for
up to 8 audio
transcoded video
channels.
The gateway automatically performs A-Law
G.711-to-µ-Law G.711 translation between the IP and
ISDN sides if needed.
NOTE: When your unit includes both a gateway and
Cisco IPVC 35xx MCU, G.728 transcoding is supported
on the Cisco IPVC 35xx MCU only.
Supported video
protocols H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264.
Supported video
resolutions VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF.