RE: [Sipping] Re: [Sipforum-discussion] SIP Telephony Device Requirements, Configuration and Data

Gunnar Hellström writes:

> SIP-xx, analogue text support: SIP adapter devices (for 
> analog phone lines)
>   MUST support conversion between real time text transmission 
> using RFC 2793 [y]
>   and text telephones according to ITU-T V.18 [x] allowing 
> alternating use of
>   text and voice. SIP clients MUST fallback to G.711 if 
> RFC2793 connection fails.

This and the other below are excellent points! Thanks for the
contribution. Will add in the next version of 

http://www.ietf.org/internet-drafts/draft-sinnreich-sipdev-req-00.txt

Henry

> -----Original Message-----
> From: sipping-admin@ietf.org [mailto:sipping-admin@ietf.org] 
> On Behalf Of Gunnar Hellström
> Sent: Thursday, February 13, 2003 2:22 PM
> To: Henry Sinnreich; 'Jörgen Björkner'; 
> sipforum-discussion@lists.su.se
> Cc: sipping@ietf.org
> Subject: [Sipping] Re: [Sipforum-discussion] SIP Telephony 
> Device Requirements, Configuration and Data
> 
> 
> Henry,
> 
> It is mentioned in the introduction to the document that 
> "text shall be kept in mind".
> 
> I suggest some specific text items to be entered that are in 
> line with existing standardisation, and accessibility needs 
> and useful for all:
> 
> --------------------------------------------------------------
> --------------
> -------------------
> SIP-xx, analogue text support: SIP adapter devices (for 
> analog phone lines)
>   MUST support conversion between real time text transmission 
> using RFC 2793 [y]
>   and text telephones according to ITU-T V.18 [x] allowing 
> alternating use of
>   text and voice. SIP clients MUST fallback to G.711 if 
> RFC2793 connection fails.
> 
> 
> SIP-zz, digital text support: SIP telephone devices MUST support
>   real time text conversation using RFC 2793 [y] for the text stream.
>   It MUST be possible to use text simultaneously with voice.
> 
> 
> 
> ---------------------------------------------
> In 4.11 Ringer Behaviour  : add the section below for the 
> purpose of deaf, hearing impaired, deaf-blind people and 
> people in the garden and noisy
> locations:
> 
> SIP Telephony devices MUST provide an external interface to
> an external alerting system.
> 
> 
> 
> Add to References
> -----------------
> [y] G. Hellstrom: "RTP Payload for Text Conversation.", RFC 
> 2793, IETF, May 2000. [z] ITU-T Recommendation V.18 
> "Operational and interworking requirements for DCEs operating 
> in the text telephone mode", November 2000 with amendment 
> November 2002.
> 
> --------------------------------------------------------------
> --------------
> -------
> 
> 
> 
> 
> Thanks
> -------------------------------------------
> Gunnar Hellström
> Omnitor AB
> Renathvägen 2
> SE 121 37 Johanneshov
> SWEDEN
> +46 8 556 002 03
> Mob: +46 708 204 288
> www.omnitor.se
> Gunnar.Hellstrom@Omnitor.se
> --------------------------------------------
> 
> > -----Ursprungligt meddelande-----
> > Från: sipforum-discussion-admin@lists.su.se
> > [mailto:sipforum-discussion-admin@lists.su.se]För Henry Sinnreich
> > Skickat: den 10 februari 2003 15:49
> > Till: 'Jörgen Björkner'; sipforum-discussion@lists.su.se
> > Ämne: [Sipforum-discussion] SIP Telephony Device Requirements, 
> > Configuration and Data
> >
> >
> > For everyone interested SIP phones and other SIP communication 
> > devices, and the 56 IETF  coming next month, please see if 
> you like or 
> > dislike or don't care about the draft:
> >
> > 
> http://www.ietf.org/internet->
drafts/draft-sinnreich-sipdev-req-00.txt
> >
> > The idea is to have discussions on the lists, and if there 
> is interest 
> > and rough consensus to move ahead with an informational RFC. Would 
> > appreciate your comments to
> >
> > sipping@ietf.org , and also to
> >
> > sipforum-discussion@lists.su.se
> >
> > Thanks, Henry
> >
> > Henry Sinnreich
> > WorldCom
> > 400 International Parkway
> > Richardson, Texas 75081
> > USA
> >
> >
> >
> 
> 
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