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Knowledgebase: VoIP
No function on DTMF tone
Posted by CyberData Administrator, Last modified by CyberData Administrator on 13 February 2015 01:50 PM

First confirm that your device registered with your SIP server. If you still find no function when you try to enter a DTMF tone, make sure your SIP phone is set to 101 for the DTMF payload type (Out of Band RFC2833).