Re: [MMUSIC] I-D Action: draft-ietf-mmusic-sdp-cs-12.txt

Hi Andrew,

thanks for your comments. I have accepted all your comments and submitted 
version -13:

http://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-cs/

See inline answers

On 17/10/2012 2:31, Andrew Allen wrote:
> I have reviewed this and have some minor editorial comments:
>
>
> One NIT
>
> 5.6.2.  Generating the Answer
>
> "The Answerer MUST also include its E.164 number of the "c=" line."
>
> Shouldn't this be
>
> "The Answerer MUST also include its E.164 number on the "c=" line."

Yes, fixed

>
>
> Another comment on the new proposed text at the end of 5.6.2:
>
> If the Answerer becomes the active party, generates an SDP answer,	and
> then it finds out that the circuit-switched call cannot be
> established, then such endpoint MUST create a new SDP offer where
> circuit-switched stream is removed from the session (actually, by
> setting the corresponding port in the m= line to zero) and send it to
> its counter part. This is to synchronize both parties (and potential
> intermediaries) on the state of the session.
>
> Instead of "then such endpoint MUST" why not state "then the Answerer
> MUST"
>

Yes, no problem. Fixed.

>
> Also the proposed new text in 5.6.3:
>
> Note that it if deliver of the Answer is delayed for some reason, the
> circuit-switched call may arrive at the Offerer before the Answer has
> been processed. In this case, since the correlation mechanisms are
> negotiated as part of the Offer/Answer exchange,the Answerer cannot
> know whether the incoming call attempt is correlated with the session
> being negotiated, the Offerer SHOULD accept the call only after it has
> received and processed the Answer.
>
> Propose to replace it with:
>
> "Note that it if delivery of the Answer is delayed for some reason,
> the circuit-switched call attempt may arrive at the Offerer before the
> Answer has been processed. In this case, since the correlation
> mechanisms are negotiated as part of the Offer/Answer exchange, the
> Answerer cannot know whether or not the incoming circuit-switched call
> attempt is correlated with the session being negotiated, the Offerer
> SHOULD answer the circuit-switched call attempt only after it has
> received and processed the Answer."

Fixed.

>
> So that there is no ambiguity that we are talking about the
> circuit-switched call attempt.
>
> Also at the end of the security considerations section
>
> "Additionally, it is strongly RECOMMENDED that the end user is asked
> for consent prior to the endpoint initiating a circuit-switched
> connection which might incur in charges.
>
> Remove in from "incur in charges"

I am ok with that. Fixed.

Thanks,

         Miguel

>
> Andrew
>
>> -----Original Message----- From: mmusic-bounces@ietf.org
>> [mailto:mmusic-bounces@ietf.org] On Behalf Of
>> internet-drafts@ietf.org Sent: Monday, October 08, 2012 4:10 AM To:
>> i-d-announce@ietf.org Cc: mmusic@ietf.org Subject: [MMUSIC] I-D
>> Action: draft-ietf-mmusic-sdp-cs-12.txt
>>
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories. This draft is a work item of the Multiparty Multimedia
>> Session Control Working Group of the IETF.
>>
>> Title           : Session Description Protocol (SDP) Extension For
>> Setting Up Audio and Video Media Streams Over Circuit-Switched
>> Bearers In The Public Switched Telephone Network (PSTN) Author(s)
>> : Miguel A. Garcia-Martin Simo Veikkolainen Filename        :
>> draft-ietf-mmusic-sdp-cs-12.txt Pages           : 37 Date
>> : 2012-10-08
>>
>> Abstract: This memo describes use cases, requirements, and protocol
>> extensions for using the Session Description Protocol (SDP)
>> Offer/Answer model for establishing audio and video media streams
>> over circuit-switched bearers in the Public Switched Telephone
>> Network (PSTN).
>>
>>
>> The IETF datatracker status page for this draft is:
>> https://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-cs
>>
>> There's also a htmlized version available at:
>> http://tools.ietf.org/html/draft-ietf-mmusic-sdp-cs-12
>>
>> A diff from the previous version is available at:
>> http://www.ietf.org/rfcdiff?url2=draft-ietf-mmusic-sdp-cs-12
>>
>>
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>
>> _______________________________________________ mmusic mailing list
>> mmusic@ietf.org https://www.ietf.org/mailman/listinfo/mmusic
>
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-- 
Miguel A. Garcia
+34-91-339-3608
Ericsson Spain