Cisco 8800 Series, Manual

Page: 380 / 544

Configure the SDP Payload Types
Your Cisco IP Phone supports RFC4733. You can choose from three audio-video transport (AVT) options to
send DTMF pulses to the server.
Configured dynamic payloads are used for outbound calls only when the Cisco IP Phone presents a Session
Description Protocol (SDP) offer. For inbound calls with an SDP offer, the phone follows the caller’s assigned
dynamic payload type.
The Cisco IP Phone uses the configured codec names in outbound SDP. For incoming SDP with standard
payload types of 0-95, the phone ignores the codec names. For dynamic payload types, the phone identifies
the codec by the configured codec names. The comparison is case-sensitive, so you need to set the name
correctly.
You can also configure the parameters in the phone configuration file (cfg.xml). To configure each of the
parameters, see the syntax of the string in
SDP Payload Types, on page 361 .
Before you begin
Access the phone administration web page. See Access the Phone Web Interface, on page 104 .
Procedure
Step 1
Select Voice > SIP .
Step 2 In the SDP Payload Types section, set the value as specified in SDP Payload Types, on page 361 .
• AVT Dynamic Payload —is any nonstandard data. Both sender and receiver must agree on a number.
The range is from 96 to 127. The default is 101.
•
AVT 16kHz Dynamic Payload
—is any nonstandard data. Both sender and receiver must agree on a
number. The range is from 96 to 127. The default is 107.
• AVT 48kHz Dynamic Payload —is any nonstandard data. Both sender and receiver must agree on a
number. The range is from 96 to 127. The default is 108.
Step 3 Click
Submit All Changes
.
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
360
Cisco IP Phone Installation
Configure the SDP Payload Types