Aastra 9143i Series Administrator's Manual page 285

Configuring RTP Features
Use the following procedures to configure the RTP features on the IP phone.
Configuration Files
For specific parameters you can set for RTP features in the configuration files, see Appendix A, the section,
"RTP, Codec, DTMF Global Settings"
IP Phone UI
Step Action
1 Press on the phone to enter the Options List.
2 Select Administrator Menu.
3 Enter your Administrator password.
Note: The IP Phones accept numeric passwords only.
4 Select SIP Settings.
5 Select RTP Port Base to change the RTP port base setting. Default is 3000.
6 Press Done (2 times) to save the change.
Note: The session prompts you to restart the IP phone to apply the configuration settings
7 Select Restart.
41-001160-03 Rev 00, Release 2.5
Configuring Network and Session Initiation Protocol (SIP) Features
on page A-133.
Global SIP Settings
4-101