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Advanced Network Settings
4-54 41-001129-00 Rev 09, Release 1.4.1
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-58
• “DTMF Per-Line Settings” on page A-60
• “Silence Suppression Settings” on page A-61.
IP Phone UI
Step Action
1 For 9112i/9133i:
Press Ion the phone to enter the Options List.
For 480i/480i CT:
Press % on the phone to enter the Options List.
2Select 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.
5Select Phone Status.
6Select Restart Phone and press Restart to restart the IP phone.