Cisco 8831 Administration Guide

Usage NotesPurposeNetworking Protocol
Cisco Unified IP Phones use TCP to
connect to Cisco Unified
Communications Manager and to
access XML services.
TCP is a connection-oriented transport
protocol.
Transmission Control
Protocol (TCP)
When security is implemented, Cisco
Unified IP Conference Phone use the
TLS protocol when securely
registering with Cisco
Unified Communications Manager.
For more information, see
Cisco Unified Communications
Manager Security Guide.
TLS is a standard protocol for securing
and authenticating communications.
Transport Layer Security
(TLS)
TFTP requires a TFTP server in your
network, which can be automatically
identified from the DHCP server. If
you want a phone to use a TFTP
server other than the one specified
by the DHCP server, you must
manually assign the IP address of the
TFTP server by using the Network
Setup menu on the phone.
For more information, see
“Cisco TFTP” chapter in the Cisco
Unified Communications Manager
System Guide.
TFTP allows you to transfer files over the
network.
On the Cisco Unified IP Conference
Phone 8831, TFTP enables you to obtain
a configuration file specific to the phone
type.
Trivial File Transfer
Protocol (TFTP)
Cisco Unified IP Phones transmit and
receive RTP streams, which utilize
UDP.
UDP is a connectionless messaging
protocol for delivery of data packets.
User Datagram Protocol
(UDP)
Related Topics
Cisco Unified IP Communications product interactions, on page 35
Phone startup process, on page 40
Network Setup menu, on page 62
Supported features
The Cisco Unified IP Conference Phone 8831 functions much like a digital business phone, or conference
phone, allowing you to place and receive teleconference phone calls. In addition to traditional telephony
features, the conference phone includes features that enable you to administer and monitor the conference
phone as a network device.
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager
9.0
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Cisco Unified IP Conference Phone 8831
Supported features

Cisco 8831 Specifications

General

Headset Port	No dedicated headset port
Wireless	No
Bluetooth	No
USB Port	No
Video Support	No
Audio	Full-duplex speakerphone
Connectivity	10/100 Ethernet
Power	Power over Ethernet (PoE)
Network Protocols	SIP
Weight	1.1 kg
Audio Codecs	G.711, G.722, G.729, iLBC
Network Ports	2 x Ethernet ports
Security	TLS