Cisco Systems 545 Serial manual Cisco Gateway Feature Specifics

Chapter 1 Functionality

About Gateway Features

		Table 1-1	Gateway Feature Summary (continued)
		Feature		Description
		Encryption support		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.
		H.243 Conference		The gateway supports the H.243 protocol in ISDN-to-IP calls and in
		Control support		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.
		Peer-to-peer		The gateway supports connectivity to the IP network through a gatekeeper,
		connectivity		or directly to a peer device such as Cisco Unified Communications
				Manager.
		IP network		The gateway has one 10/100Base-T Ethernet IP port (on the front panel)
		connections		and connects to an IP segment through a direct connection to a network
				switch.
		Table 1-2lists features for specific Cisco gateways.
		Table 1-2	Cisco Gateway Feature Specifics
		Feature			Cisco Unified Videoconferencing	Cisco Unified Videoconferencing
					3545 PRI Gateway	3545 Serial Gateway
		Supported ports			2 PRI ISDN ports	4 serial ports
		Supported video			H.320, H.323 (using Cisco Stack v4.0)
		conferencing protocols
		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: G.711, G.722, G.722.1,
					G.723.1, G.728
		Audio Transcoding			G.711 (ISDN) < > G.723.1 (IP) for	Transcoding for the 4 supported
					up to 60 voice channels.	multimedia calls.
					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.
		Supported video			H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264
		protocols
	Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5
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