Network Protocols - Cisco 8961 Administration Manual

Cisco Unified IP Phone

Network protocols

Cisco Unified IP Phones support several industry-standard and Cisco network protocols required for voice
communication. The following table provides an overview of the network protocols that the Cisco Unified
IP Phone 8961, 9951, and 9971 support.
Table 1: Supported network protocols on the Cisco Unified IP Phone
Network protocol
Bluetooth
Bootstrap Protocol (BootP)
Cisco Audio Session Tunnel
(CAST)
Cisco Discovery Protocol (CDP)
Cisco Peer-to-Peer Distribution
Protocol (CPPDP)
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Purpose
Bluetooth is a wireless personal area network (WPAN)
protocol that specifies how devices communicate over short
distances.
BootP enables a network device, such as the Cisco Unified
IP Phone, to discover certain startup information, such as the
IP address.
The CAST protocol allows Cisco Unified IP Phones and
associated applications to discover and communicate with
the remote IP Phones without requiring changes to the
traditional signaling components, such as Cisco Unified
Communications Manager (CM) and gateways.
CDP is a device-discovery protocol that runs on all
Cisco-manufactured equipment.
Using CDP, a device can advertise its existence to other
devices and receive information about other devices in the
network.
CPPDP is a Cisco proprietary protocol used to form a
peer-to-peer hierarchy of devices. This hierarchy is used to
distribute firmware files from peer devices to their
neighboring devices.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
Network protocols
Usage notes
Cisco Unified IP Phones 9951 and
9971 support Bluetooth 2.1.
—
The Cisco Unified IP Phone uses
CAST as an interface between
CUVA and Cisco Unified
Communications Manager using
the Cisco Unified IP Phone as a
SIP proxy.
The Cisco Unified IP Phone uses
CDP to communicate information
such as auxiliary VLAN ID, per
port power management details,
and Quality of Service (QoS)
configuration information with the
Cisco Catalyst switch.
CPPDP is used by the Peer
Firmware Sharing feature.
(SIP)
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