Cisco Systems 7920 manual Networking Protocol Purpose Usage Notes, Dhcp

Chapter 1 An Overview of the Cisco Wireless IP Phone 7920

Networking Protocols Used with Cisco Wireless IP Phones

Table 1-1 Supported Networking Protocols on the Cisco Wireless IP Phone

Networking Protocol	Purpose	Usage Notes
Wi-Fi (802.11b)	802.11 is an open standard that	Cisco Wireless IP Phone 7920 uses
	defines wireless methods of	the 802.11b standard with a range of
	transmitting Ethernet traffic and is	2.4-2.497 GHz RF and dynamic rate
	commonly called Wi-Fi. This	scaling of 1, 2, 5.5, and 11Mbps
	standard defines for radio	speeds.
	frequencies (RF) and data speed for
	wireless LAN communications.
Cisco Discovery	CDP is a device-discovery protocol	The Cisco IP Phone uses CDP to
Protocol (CDP)	that runs on all Cisco-manufactured	communicate information such as
	equipment.	auxiliary VLAN ID, per-port power
	Using CDP, a device can advertise its	management details, and Quality of
		Service (QoS) configuration
	existence to other devices and receive
		information with the Cisco Catalyst
	information about other devices in
		switch.
	the network.
Dynamic Host	DHCP dynamically allocates and	DHCP is enabled by default. If
Configuration Protocol	assigns an IP address to network	disabled, you must manually
(DHCP)	devices.	configure the IP address, subnet
	DHCP enables you to connect an	mask, gateway, and an TFTP server
		on each phone locally.
	IP phone into the network and have
	the phone become operational	Cisco recommends that you use
	without you needing to manually	DHCP custom option 150. With this
	assign an IP address or configure	method, you configure the TFTP
	additional network parameters.	server IP address as the option value.
		For additional supported DCHP
		configurations, refer to
		Cisco CallManager System Guide.

	Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 3.3 or Later
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