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Cisco Unified SIP Phone 3905 Supported Features
Networking Protocol
Trivial File Transfer
Protocol (TFTP)
User Datagram
Protocol (UDP)
Related Topics
Cisco Unified IP Communications Product Interactions, on page 21
Phone Startup Process, on page 25
Cisco Unified SIP Phone 3905 Supported Features
Cisco Unified IP Phones function much like a digital business phone, allowing you to place and receive phone
calls. In addition to traditional telephony features, the Cisco Unified IP Phone includes features that enable
you to administer and monitor the phone as a network device.
Feature Overview
Cisco Unified IP Phones provide traditional telephony functionality, such as call forwarding and transferring,
redialing, conference calling, and voice messaging system access. Cisco Unified IP phones also provide a
variety of other features.
As with other network devices, you must configure Cisco Unified IP Phones to prepare them to access
Cisco Unified Communications Manager and the rest of the IP network. By using DHCP, you have fewer
settings to configure on a phone, but if your network requires it, you can manually configure an IP address,
TFTP server, subnet information, and so on.
Finally, because the Cisco Unified IP Phone is a network device, you can obtain detailed status information
from it directly. This information can assist you with troubleshooting any problems users might encounter
when using their IP phones.
Related Topics
Cisco Unified IP Phone Settings, on page 35
Features, Templates, Services, and Users, on page 47
Troubleshooting and Maintenance, on page 79
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
10
Purpose
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.
Cisco Unified IP Phone
Usage Notes
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 Configuration
menu on the phone.
For more information, go to the "Cisco TFTP"
chapter in the Cisco Unified Communications
Manager System Guide.
Cisco Unified IP Phones transmit and receive
RTP streams, which utilize UDP.
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Troubleshooting
