Aastra Telecom C53I Guía Del Usuario

Advanced Network Settings

41-001160-00, Rev 01  Release 2.0

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Network Configuration of the IP Phones

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1

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

2

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

3

Enable 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.

4

Enable 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.