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Table 6: Supported Network Protocols on the Cisco Unified IP Phone 8941 and 8945
Network protocol
Bluetooth Wireless
Technology
Bootstrap Protocol (BootP)
Cisco Audio Session
Tunneling (CAST)
Cisco Discovery Protocol
(CDP)
Cisco Peer-to-Peer
Distribution Protocol
(CPPDP)
Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 10.0 (SCCP
Purpose
Bluetooth enables low bandwidth wireless
connections within a range of 30 feet (10 meters).
The best performance is in the 3- to 6-foot (1- to
2-meter) range. Bluetooth wireless technology
operates in the 2.4 GHz band which is the same
as the 802.11b/g band. There can be a potential
interference issues. Cisco recommends that you:
• Use 802.11a that operates in the 5 GHz
band.
• Reduce the proximity of other 802.11b/g
devices, Bluetooth devices, microwave
ovens, and large metal objects.
Only the Cisco Unified IP Phone 8945
Note
supports Bluetooth.
BootP enables a network device such as the Cisco
Unified IP Phone to discover certain startup
information; for example, the phone IP address.
The CAST protocol allows IP phones and
associated applications to discover remote
endpoints and communicate with them without
requiring changes to the traditional signalling
components, like Cisco Unified Communications
Manager and gateways. The CAST protocol
allows separate hardware devices to synchronize
related media and allows the PC to be used as a
video resource for non-video enabled phones.
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.
Network Protocols
Usage notes
For more information about
using Bluetooth headsets with
your Cisco Unified IP Phone,
see
Bluetooth Wireless
Headsets, on page
64.
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.
For more information, see
Set
Up Peer Firmware Sharing,
on page
130.
and SIP)
9
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