AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 259)

4-96 41-001343-01 Rev 03, Release 3.2.2
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.
For the 6739i:
1
Press the Options key on the phone to enter the Options List.
2 Press the Advanced button. A keyboard displays.
3 Enter the Administrator password using the keyboard. Default is “22222”.
4 Press the SIP button.
5 Press to scroll to the next screen.
6 Press RTP Port Base and enter an RTP port base setting. Default is 3000.
7 Press until the Options List screen displays.
8 Press Restart to restart the phone for the change to take affect.
Aastra Web UI
Step Action
1 Click on Advanced Settings->Global SIP->RTP Settings.
Global Settings.
IP Phone UI
Step Action