Cisco 7961G-GE - IP Phone VoIP Administration Manual page 27

Chapter 1 An Overview of the Cisco Unified IP Phone
Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol
Transmission Control
Protocol (TCP)
Transport Layer
Security (TLS)
Trivial File Transfer
Protocol (TFTP)
User Datagram Protocol
(UDP)
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
OL-11953-01
Purpose
TCP is a connection-oriented
transport protocol.
TLS is a standard protocol for
securing and authenticating
communications.
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.
UDP is a connectionless messaging
protocol for delivery of data packets.
Related Topics
Understanding Interactions with Other Cisco Unified IP Telephony Products,
•
page 2-2
Understanding the Phone Startup Process, page 2-10
•
Network Configuration Menu, page 4-7
•
What Networking Protocols are Used?
Usage Notes
Cisco Unified IP Phones use TCP to
connect to Cisco
Unified Communications Manager
and to access XML services.
When security is implemented, Cisco
Unified IP Phones use the TLS
protocol when securely registering
with Cisco Unified Communications
Manager.
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 using the Network
Configuration menu on the phone.
Cisco Unified IP Phones transmit and
receive RTP streams, which utilize
UDP.
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