Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER scenario in JSEP
Neil Stratford <neils@belltower.co.uk> Fri, 11 May 2012 15:04 UTC
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From: Neil Stratford <neils@belltower.co.uk>
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Date: Fri, 11 May 2012 16:04:31 +0100
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References: <387F9047F55E8C42850AD6B3A7A03C6C0E23B102@inba-mail01.sonusnet.com> <6F428EFD2B8C2F49A2FB1317291A76C1136029362A@USNAVSXCHMBSA1.ndc.alcatel-lucent.com> <4FA13816.6050003@alvestrand.no> <CAD5OKxsOAeTRdCgj2g4BY8maeG1n9nzCv29g8kaFPVZ4tf8C5w@mail.gmail.com> <4FA15898.1040204@alvestrand.no> <7F2072F1E0DE894DA4B517B93C6A05852C44001329@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxsbTSpMPg30P4DSN6UasCx6na43tpZ5yT2ct6SLMpd9xQ@mail.gmail.com> <7F2072F1E0DE894DA4B517B93C6A05852C4400132C@ESESSCMS0356.eemea.ericsson.se> <6F428EFD2B8C2F49A2FB1317291A76C1136047B753@USNAVSXCHMBSA1.ndc.alcatel-lucent.com> <7F2072F1E0DE894DA4B517B93C6A05852C4400132F@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxuy8_Ras3X-8tcY1qaLRTVJ-z-JuXQaf0NKaRwN_dU18Q@mail.gmail.com> <7F2072F1E0DE894DA4B517B93C6A05852C442AC0DA@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxuv7T6YrEXEeVECKbGtRg4feoRYTgvC57yqWXTBK43ypg@mail.gmail.com> <4FA2B447.7010504@jesup.org> <4FA2E264.4040207@jesup.org> <7F2072F1E0DE894DA4B517B93C6A05852C44001 338@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxuq14_DfSJuFEHq_ZEubbOYt7NFTcXWpLND8ggAr37QhA@mail.gmail.com> <7F2072F1E0DE894DA4B517B93C6A05852C44001339@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxvFYy-9XAE5GG0n58xX2HKRX3o5qkTZ2o6rugakaM77Ew@mail.gmail.com> <7F2072F1E0DE894DA4B517B93C6A05852C4400133A@ESESSCMS0356.eemea.ericsson.se> <CAOJ7v-1Ue=q4MAh0csiDLvRFfMGaJ4vWrDxhir-S-OjSTsymaw@mail.gmail.com> <387F9047F55E8C42850AD6B3A7A03C6C160337F1@inba-mail01.sonusnet.com> <6E35F409-3B3F-4D92-91F2-451E0910CFDE@iii.ca> <CABkgnnVO5UyhHjiWVPsLYAoXSKPsfn6Fnb10hQr_6-kgq0FC3g@mail.gmail.com> <F0D1114C-0B6C-4AED-BDD3-4E3D6A219485@iii.ca> <CABkgnnWNLOb_xLUfOoZ5d7sKVsJDvjmNhmRqFcupO4S4p8Nrfw@mail.gmail.com> <219EC9F7-87B8-4E7B-8D6F-58A5B9773D29@iii.ca> <6F428EFD2B8C2F49A2FB1317291A76C1136D546819@USNAVSXCHMBSA1.ndc.alcatel-lucent.com>
To: "Ejzak, Richard P (Richard)" <richard.ejzak@alcatel-lucent.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER scenario in JSEP
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On 11 May 2012, at 15:26, Ejzak, Richard P (Richard) wrote: > But things are different with ICE and DTLS, particularly if you want to avoid media intermediaries. Significant clipping is a real possibility if we have to restart ICE/DTLS after the "winner" responds with 200 OK. > > This is not a separate use case, but a given aspect of interworking with SIP. The whole problem of clipping audio due to the delay between the 200OK and the media actually flowing raises a flag that we are triggering upper layers of the stack on the wrong event. Why is anyone sending media before the media channel is fully established? Why tell the user (or IVR etc) that the call is answered before we have a working media channel? Neil
- [rtcweb] SDP_PRANSWER followed by SDP_OFFER scena… Ravindran, Parthasarathi
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Charles Eckel (eckelcu)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Nataraju A.B
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Justin Uberti
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ejzak, Richard P (Richard)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Nataraju A.B
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ravindran, Parthasarathi
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ravindran, Parthasarathi
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Harald Alvestrand
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Harald Alvestrand
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Harald Alvestrand
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ejzak, Richard P (Richard)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ejzak, Richard P (Richard)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Randell Jesup
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roy, Radhika R CIV (US)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Randell Jesup
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Christer Holmberg
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Justin Uberti
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ravindran, Parthasarathi
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Martin Thomson
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Martin Thomson
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Justin Uberti
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Martin Thomson
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Iñaki Baz Castillo
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Cullen Jennings
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ejzak, Richard P (Richard)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Neil Stratford
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Randell Jesup
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Victor Semanic
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ejzak, Richard P (Richard)
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Ravindran, Parthasarathi
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Tim Panton
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Martin Thomson
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Roman Shpount
- Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER s… Randell Jesup