Re: [webrtc-pc] Failed to execute 'insertDTMF' on 'RTCDTMFSender': The 'canInsertDTMF' attribute is false: this sender cannot send DTMF. from Bernard Aboba via GitHub on 2018-08-10 (public-webrtc-logs@w3.org from August 2018)

From: Bernard Aboba via GitHub <sysbot+gh@w3.org>
Date: Fri, 10 Aug 2018 22:04:50 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-412218613-1533938689-sysbot+gh@w3.org>

@jiaguolin  canInsertDTMF false indicates that you cannot send DTMF, so you should check it first.
PR https://github.com/w3c/webrtc-pc/pull/1957  elucidates the reasons why canInsertDTMF can be false, such as: 

1. sender does not have a track or track.kind isn't "audio"
2. DTMF codec ("audio/telephone-event") is not negotiated
3. pc.currentDirection is not "sendrecv" or "sendonly"

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Received on Friday, 10 August 2018 22:04:58 UTC