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Re: Mozilla/Cisco API Proposal: DTMF

From: Ian Hickson <ian@hixie.ch>
Date: Mon, 25 Jul 2011 21:11:45 +0000 (UTC)
To: public-webrtc@w3.org
Message-ID: <Pine.LNX.4.64.1107252108320.2079@ps20323.dreamhostps.com>
On Mon, 18 Jul 2011, Cullen Jennings wrote:
> 
> Completely agree. The RTCWeb WG at IETF is trying to make a set of 
> recommendation for what the over the wire protocol choices should be. I 
> and others have been arguing that 4733 is the one that should be used 
> for this work. There has not been much disagreement about this so if I 
> had to guess, I would say it is very likely that will end up being the 
> IETF recommendation to the W3C.

So should a PeerConnection object establish a separate audio channel when 
created specifically for sending RFC 4733 DTMF event codes to legacy phone 
networks, with a corresponding API? Or can event codes be sent over the 
same audio channel as any other audio stream? I didn't follow the RFC 
enough to answer that question.

Also, how long and how loud should the events be? Should all event codes 
be supported, or only 0-9, *, and #, or those as well as A-D?

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 25 July 2011 21:12:09 GMT

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