Table of Contents
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About Gateway Features
Table 1-1
Feature
Encryption support
H.243 Conference
Control support
Peer-to-peer
connectivity
IP network
connections
Table 1-2
Table 1-2
Feature
Supported ports
Supported video
conferencing protocols
Supported audio codecs The term audio transcoded video calls refers to the process whereby an
Audio Transcoding
Supported video
protocols
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5
1-4
Gateway Feature Summary (continued)
Description
The gateway supports H.235-compliant AES 128 encryption for calls over
IP networks, and H.233 and H.234-compliant AES 128 encryption for
calls over ISDN networks.
The gateway supports the H.243 protocol in ISDN-to-IP calls and in
IP-to-ISDN calls. The gateway identifies the protocol version that an IP
endpoint uses and sends H.239 capabilities only to those endpoints
working with protocol version 4.0 or later.
The gateway supports connectivity to the IP network through a gatekeeper,
or directly to a peer device such as Cisco Unified Communications
Manager.
The 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.
lists features for specific Cisco gateways.
Cisco Gateway Feature Specifics
Cisco Unified Videoconferencing
3545 PRI Gateway
2 PRI ISDN ports
H.320, H.323 (using Cisco Stack v4.0)
audio stream in a multimedia call can be transcoded from one codec type to
another.
Basic and advanced audio coding supported codecs: G.711, G.722, G.722.1,
G.723.1, G.728
G.711 (ISDN) < > G.723.1 (IP) for
up to 60 voice channels.
G.711 (IP) < > G.728 (ISDN) for up
to 20 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 Cisco unit
includes both a gateway and
a MCU, G.728 transcoding is
supported on the MCU only.
H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264
Chapter 1
Cisco Unified Videoconferencing
3545 Serial Gateway
4 serial ports
Transcoding for the 4 supported
multimedia calls.
Functionality
OL-14912-01
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