Cisco Systems 8961 What Networking Protocols are Used?, Networking Protocol Purpose Usage Notes

Chapter 1 An Overview of the Cisco Unified IP Phone

What Networking Protocols are Used?

What Networking Protocols are Used?

Cisco Unified IP Phones support several industry-standard and Cisco networking protocols required for voice communication. Table 1-4provides an overview of the networking protocols that the

Cisco Unified IP Phone 8961, 9951, and 9971 support.

Table 1-4			Supported Networking Protocols on the Cisco Unified IP Phone
	Networking Protocol			Purpose	Usage Notes
	Bluetooth			Bluetooth is a wireless personal area	Cisco Unified IP Phone 9951 and 9971 support
				network (WPAN) protocol that specifies	Bluetooth 2.1
				how devices communicate over short
				distances.
	Bootstrap Protocol			BootP enables a network device such as	—
	(BootP)			the Cisco Unified IP Phone to discover
				certain startup information, such as its IP
				address.
	Cisco Audio Session			The CAST protocol allows the Cisco	The Cisco Unified IP Phone uses CAST as an
	Tunnel (CAST)			Unified IP Phones and associated	interface between CUVA and Unified CM using the
				applications to discover and communicate	Cisco IP Phone as a SIP proxy.
				with the remote IP phones without
				requiring changes to the traditional
				signaling components such as Cisco
				Unified CM and gateways.
	Cisco Discovery Protocol			CDP is a device-discovery protocol that	The Cisco Unified IP Phone uses CDP to
	(CDP)			runs on all Cisco-manufactured	communicate information such as auxiliary VLAN ID,
				equipment.	per port power management details, and Quality of
				Using CDP, a device can advertise its	Service (QoS) configuration information with the
					Cisco Catalyst switch.
				existence to other devices and receive
				information about other devices in the
				network.
	Cisco Peer-to-Peer			CPPDP is a Cisco proprietary protocol	CPPDP is used by the Peer Firmware Sharing
	Distribution Protocol			used to form a peer to peer hierarchy of	feature.
	(CPPDP)			devices. This hierarchy is used to
				distribute firmware files from peer devices
				to their neighboring devices.
	Dynamic Host			DHCP dynamically allocates and assigns	DHCP is enabled by default. If disabled, you must
	Configuration Protocol			an IP address to network devices.	manually configure the IP address, subnet mask,
	(DHCP)			DHCP enables you to connect an IP phone	gateway, and a TFTP server on each phone locally.
				into the network and have the phone	Cisco recommends that you use DHCP custom
				become operational without your needing	option 150. With this method, you configure the
				to manually assign an IP address or to	TFTP server IP address as the option value. For
				configure additional network parameters.	additional supported DHCP configurations, go to
					the Dynamic Host Configuration Protocol chapter
					and the Cisco TFTP chapter in the Cisco Unified
					Communications Manager System Guide.
					Note If you cannot use option 150, you may try
					using DHCP option 66.
		Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)
	1-10				OL-20861-01