Configuring the IP Phones

Advanced Network Settings

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Aastra Web UI

Step Action

1Click on Advanced Settings->Global SIP->RTP Settings.

2Enter an RTP Port Base in the RTP Port field. Default is 3000.

3Enable the "Basic Codecs (G.711 u-Law, G.711 a-Law, G.729)" field by checking the check box. (Disable this field by unchecking the box). Enabling this parameter allows the IP phone to use the basic Codecs when sending/receiving RTP packets.

4Enable the "Force RFC2833 Out-of-Band DTMF" field by checking the check box. (Disable this field by unchecking the box). Enabling this parameter forces the IP phone to use out-of-band DTMF according to RFC2833.

Configuring the IP Phones

41-001129-00 Rev 09, Release 1.4.1

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Aastra Telecom 480I CT manual Enter an RTP Port Base in the RTP Port field. Default is