Re: Last Call: <draft-hanes-dispatch-fax-capability-06.txt> (Indicating Fax over IP Capability in the Session Initiation Protocol (SIP)) to Proposed Standard

[Gonzalo Salgueiro <[e-mail]>]

Thanks for the review, Hadriel.  After the IESG review I'll make the suggested edits to the SIP headers in the examples.

Cheers,

Gonzalo

On Dec 21, 2012, at 1:28 PM, Hadriel Kaplan wrote:

> Howdy,
> I've read the draft and overall it looks good.  
> 
> Some minor comments:
> The examples in section 5 of the draft repeatedly show a Via header as follows:
> Via: SIP/2.0/TCP [e-mail];branch=z9hG4bK309475a2
> This is not a legal Via header format, since the sent-by field cannot contain a '@'.  It's meant to be a host or host:port, not a user@host... and more likely a host:port since this is TCP for this example.
> 
> Also, the examples show a Contact URI host of the domain in the REGISTER request, the same as the target request-URI.  While not technically illegal I guess, it's extremely unusual - the purpose of a REGISTER is to register the Contact URI as the reachable target for the Address of Record, and thus the Contact URI should indicate the specific host registering.  I suggest changing it to:
> Contact: <sip:[e-mail];transport=tcp>;+sip.fax="t38"
> 
> Lastly, the example INVITE at the end of section 5 is malformed, both because it's missing mandatory headers, and because the From header has no tag param.
> 
> -hadriel
> 
> 
> On Nov 29, 2012, at 9:46 AM, The IESG <[e-mail]> wrote:
> 
>> 
>> The IESG has received a request from an individual submitter to consider
>> the following document:
>> - 'Indicating Fax over IP Capability in the Session Initiation Protocol
>>  (SIP)'
>> <draft-hanes-dispatch-fax-capability-06.txt> as Proposed Standard
>> 
>> The IESG plans to make a decision in the next few weeks, and solicits
>> final comments on this action. Please send substantive comments to the
>> [e-mail] mailing lists by 2012-12-27. Exceptionally, comments may be
>> sent to [e-mail] instead. In either case, please retain the
>> beginning of the Subject line to allow automated sorting.
>> 
>> Abstract
>> 
>> 
>>  This document defines and registers with IANA the new 'fax' media
>>  feature tag for use with SIP.  Currently, fax calls are
>>  indistinguishable from voice at call initiation.  Consequently, fax
>>  calls can be routed to SIP user agents that are not fax capable.  A
>>  'fax' media feature tag implemented in conjunction with caller
>>  preferences allows for more accurate fax call routing.
>> 
>> 
>> 
>> 
>> The file can be obtained via
>> http://datatracker.ietf.org/doc/draft-hanes-dispatch-fax-capability/
>> 
>> IESG discussion can be tracked via
>> http://datatracker.ietf.org/doc/draft-hanes-dispatch-fax-capability/ballot/
>> 
>> 
>> No IPR declarations have been submitted directly on this I-D.
>> 
>> 
> 
>