[Perc] DTMF in Double
Cullen Jennings <fluffy@iii.ca> Sun, 13 August 2017 19:16 UTC
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From: Cullen Jennings <fluffy@iii.ca>
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Date: Sun, 13 Aug 2017 12:16:04 -0700
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Cc: Roni Even <roni.even@huawei.com>
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Subject: [Perc] DTMF in Double
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I think Roni had a good point about DTMF can be done with the SIP INFO approach so I plan to add the text do double that says something along the lines of When DTMF is sent with [RFC4733], it is end-to-end encrypted and the relay can not read it so it can not be used to control the media relay. Other out of band methods to control the relay need to can be used instead. One way to do this is to send DTMF with [RFC6086], which will be sent in the signalling thus allowing the relay to read the DTMF.
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