Cisco Systems 8.6 IPv6 in the Cisco Unified Communications, Manager Features and Services Guide

Chapter 1 An Overview of the Cisco Unified IP Phones

						What Networking Protocols are Used?
Table 1-2		Supported Networking Protocols on the Cisco Unified IP Phones (continued)
	Networking Protocol			Purpose	Usage Notes
	Internet Protocol (IP)			IP is a messaging protocol that addresses	To communicate using IP, network devices must
				and sends packets across the network.	have an assigned IP address, subnet, and gateway.
					IP addresses, subnets, and gateway identifications
					are automatically assigned if you are using the
					Cisco Unified IP Phones with Dynamic Host
					Configuration Protocol (DHCP). If you are not
					using DHCP, you must manually assign these
					properties to each phone locally. The Cisco Unified
					IP Phones support concurrent IPv4 and IPv6
					addresses. Configure the IP addressing mode (IPv4
					only, IPv6 only, and both IPv4 and IPv6) in Cisco
					Unified Communications Manager Administration.
					For more information, see Internet Protocol Version
					6 (IPv6) in the Cisco Unified Communications
					Manager Features and Services Guide.
	Link Layer Discovery			LLDP is a standardized network discovery	The Cisco Unified IP Phones support LLDP on the
	Protocol (LLDP)			protocol (similar to CDP) that some Cisco	PC port.
				and third-party devices support.
	Link Layer Discovery			LLDP-MED is an extension of the LLDP	The Cisco Unified IP Phones support LLDP-MED
	Protocol-Media Endpoint			standard developed for voice products.	on the SW port to communicate information such as:
	Devices (LLDP-MED)				•	Voice VLAN configuration
					•	Device discovery
					•	Power management
					•	Inventory management
					For more information about LLDP-MED support,
					see the LLDP-MED and Cisco Discovery Protocol
					white paper:
					http://www.cisco.com/en/US/tech/tk652/tk701/tech
					nologies_white_paper0900aecd804cd46d.shtml
	Real-Time Transport			RTP is a standard protocol for transporting	Cisco Unified IP Phones use the RTP protocol to
	Protocol (RTP)			real-time data, such as interactive voice	send and receive real-time voice traffic from other
				and video, over data networks.	phones and gateways.
	Real-Time Control			RTCP works in conjunction with RTP to	RTCP is disabled by default, but you can enable it
	Protocol (RTCP)			provide Quality of Service (QoS) data	on a per phone basis by using Cisco Unified
				(such as jitter, latency, and round trip	Communications Manager. For more information,
				delay) on RTP streams.	see Network Configuration Menu, page 4-34.
	Session Description			SDP is the portion of the SIP protocol that	SDP capabilities, such as codec types, DTMF
	Protocol (SDP)			determines which parameters are available	detection, and comfort noise, are normally
				during a connection between two	configured on a global basis by Cisco Unified
				endpoints. Conferences are established by	Communications Manager or Media Gateway in
				using only the SDP capabilities that are	operation. Some SIP endpoints may allow these
				supported by all endpoints in the	parameters to be configured on the endpoint itself.
				conference.
			Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
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