Re: [MMUSIC] Comments on Example in draft-holmberg-mmusic-udptl-dtls-02

Christer Holmberg <> Tue, 15 October 2013 06:56 UTC

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From: Christer Holmberg <>
To: James Rafferty <>
Thread-Topic: Comments on Example in draft-holmberg-mmusic-udptl-dtls-02
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Date: Tue, 15 Oct 2013 06:56:30 +0000
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Subject: Re: [MMUSIC] Comments on Example in draft-holmberg-mmusic-udptl-dtls-02
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Hi James,

Thanks for your comment! It seems to make sense. We'll take it into consideration when submitting the next version of the draft.



Lähettäjä: James Rafferty []
Lähetetty: 14. lokakuuta 2013 23:24
Vastaanottaja: Christer Holmberg
Aihe: Comments on Example in draft-holmberg-mmusic-udptl-dtls-02

Hi Christer,

I read the latest -02 draft.

My main comment is on the example in Appendix A.  In normal use of T.38 UDPTL with SIP, the sessions all tend to begin with a Voice over IP SIP session, then a re-invite is used to initiate the UDPTL fax session.  In the early days of T.38, the main use case was the VoIP / FoIP gateway, so there was always a voice session first.   We're starting to see some IAF use of T.38 now, but the implementations tend to abide by the convention of starting with VoIP first, then switching to fax.

I don't think we need to modify the example in the draft, but just have a sentence or two, or a note, saying that the example shows how the secure UDPTL session will work once the need for an IP fax session has been established.


On 9/24/2013 2:38 AM, Christer Holmberg wrote:
Hi fax lovers,

We've submitted a new version (-02) of the draft-holmberg-mmusic-udptl-dtls draft.

There are no technical changes in the new version, but we've done some editorial changes. Also, Gonzalo Salgueiro has been added as co-author of the draft.




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