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Chapter 1 An Overview of the Cisco Unified IP Phone
What Networking Protocols Are Used?
1-10
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 6.1
OL-14587-01
Related Topics
Understanding Interactions with Other Cisco Unified IP Communications
Products, page 2-2
Understanding the Phone Startup Process, page 2-8
Network Configuration Menu, page 4-7
Transmission Control
Protocol (TCP)
TCP is a connection-oriented
transport protocol.
Cisco Unified IP Phones use TCP to
connect to Cisco
Unified
Communications Manager
and to access XML services.
Transport Layer
Security (TLS)
TLS is a standard protocol for
securing and authenticating
communications.
When security is implemented, Cisco
Unified
IP Phones use the TLS
protocol when securely registering
with Cisco Unified
Communications
Manager.
Trivial File Transfer
Protocol (TFTP)
TFTP allows you to transfer files
over the network.
On the Cisco Unified IP Phone,
TFTP enables you to obtain a
configuration file specific to the
phone type.
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 TFTP server from the
Network Configuration menu on the
phone.
User Datagram Protocol
(UDP)
UDP is a connectionless messaging
protocol for delivery of data packets.
Cisco Unified IP Phones transmit and
receive RTP streams, which utilize
UDP.
Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol Purpose Usage Notes
28


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