Aastra Telecom SISIP 57I CT - Manual (Page 126)

Advanced Network Settings
4-60 41-001160-00, Rev 01 Release 2.0
IP Phone Administrator Guide
Configuring the IP Phones
Configuring RTP Features
Use the following procedures to configure RTP, basic Codecs, customized
Codecs, DTMF, and silence suppression on the IP phone.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the sections:
•
“RTP, Codec, DTMF Global Settings” on page A-63
• “DTMF Per-Line Settings” on page A-65
• “Silence Suppression Settings” on page A-66.
IP Phone UI
Step Action
1 Press on the phone to enter the Options List.
2 Select SIP Settings.
3 Select RTP Port Base to change the RTP port base setting. Default is 3000.
4 Press Done to save the RTP Port Base setting.
5 Select Phone Status.
6 Select Restart Phone and press Restart to restart the IP phone.