Re: [AVTCORE] Slight rewording on Selective Forwarding Middlebox
Magnus Westerlund <magnus.westerlund@ericsson.com> Tue, 31 March 2015 08:46 UTC
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Date: Tue, 31 Mar 2015 10:46:35 +0200
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Subject: Re: [AVTCORE] Slight rewording on Selective Forwarding Middlebox
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WG, Here is an update of the last two paragraphs taking care of some nits and a rewording of the very last sentence. Thanks for Dan Wing for feedback. Note that this topology could potentially be seen as a media translator which include an on/off logic as part of its media translation. The topology has the property that all SSRCs present in the session are visible to an endpoint. It also has mixer aspects, as the streams it provides are not basically translated version, but instead they have conceptual property assigned to them and can be both turned on/off as well as being fully or partially delivered. Thus this topology appears to be some hybrid between the translator and mixer model. The differences between selective forwarding middlebox and a switching mixer (Section 3.6.2) are minor, and they share most properties. The above requirement on having a large number of decoding instances or requiring efficient switching of decoder contexts, are one point of difference. The other is how the identification is performed, where the Mixer uses CSRC to provide information on what is included in a particular RTP stream that represent a particular concept. Selective forwarding gets the source information through the SSRC, and instead uses other mechanisms to indicate the streams intended usage, if needed. I intended to submit an updated draft on Thursday if no objections are made. Cheers Magnus Westerlund ---------------------------------------------------------------------- Services, Media and Network features, Ericsson Research EAB/TXM ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Färögatan 6 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [AVTCORE] Slight rewording on Selective Forwardin… Magnus Westerlund
- Re: [AVTCORE] Slight rewording on Selective Forwa… Magnus Westerlund
- Re: [AVTCORE] Slight rewording on Selective Forwa… Magnus Westerlund
- Re: [AVTCORE] Slight rewording on Selective Forwa… Bernard Aboba
- Re: [AVTCORE] Slight rewording on Selective Forwa… Roni Even
- Re: [AVTCORE] Slight rewording on Selective Forwa… David Benham (dbenham)
- Re: [AVTCORE] Slight rewording on Selective Forwa… Magnus Westerlund
- Re: [AVTCORE] Slight rewording on Selective Forwa… Magnus Westerlund