On 28/06/12 13:44, Edward Tie wrote:
> Op 28/06/2012 14:18, Simon McVittie schreef:
>> RTT and audio/video do have a significant technical difference: RTT is
>> in-band, and audio/video (at least as implemented in Jingle) are
>> out-of-band.
>
> I has disagree. RTT works already with SIP. See more info: Supported
> real-time text codec is t.140.
> RTT must be convert to codec t.140 in SIP.
OK, let me rephrase that: XEP-0301 and XEP-0167 have the significant
technical difference that XEP-0301 is in-band, and XEP-0167 is out-of-band.
It's certainly possible to implement the general concept of RTT
out-of-band (as in T.140), and possible (although not very useful due to
performance problems) to implement audio/video in-band, but those aren't
the proposed standards we have for RTT and audio/video in XMPP.
I do agree with the author of XEP-0301 that sending RTT in-band has some
important advantages over out-of-band.
S
