[Asterisk-Dev] Re: [Asterisk-cvs] asterisk/channels chan_sip.c,1.248,1.249

[Conroy, Lawrence (SMTP)]

Hi Folks,
   OK, I'll bite.

If one reads rfc2916bis, one notices a change - the syntax is NOT
what is proposed here. Basically, it's harris about apex from the
original (soon to be obsoleted) rfc2916. I STRONGLY recommend that
you swap the tokens around to fit with the new syntax.

Speaking as a veteran, it's not yet the right time to register an
ENUMservice, which is what you would need to do - BTW, IANA will not
register anything as an ENUMservice without passing it on to the IETF.


However, there's a get-out clause, for testing :).

The correct syntax for rfc2916 is 'E2U+<enumservice>', and a valid
<enumservice> for testing can be 'X-IAX2'. This is NOT registered
with anyone as it's reserved for experimental use, but if your
ENUM client understands it, all is cool.

My Mobile phone ENUM client will ignore it, as all well behaved
ENUM clients are supposed to when confronted with something they
can't understand/don't support. If one barfs when it reads such
an entry (i.e. one starting 'X-'), complain.

Problem solved, and a great deal of grief avoided - you would
probably need to get the IAX2 protocol anointed by the IETF
before you could register the ENUMservice before IANA would
register it - trust me, you don't want to try that yet.

all the best,
   Lawrence


On 25 Nov 2003, at 9:02 pm, Olle E. Johansson wrote:

> Jeremy McNamara wrote:
>
>> Olle E. Johansson wrote:
>>> So if I configure ENUM for a TEL url, how do I dial out then?
>>>
>>> I have EnumLookup working with SIP today, that's pretty straight 
>>> forward.
>>>
>>> How is the syntax for the DNS entry for IAX and IAX2 ?
>> http://www.voip-info.org/wiki-Asterisk+cmd+EnumLookup
>> http://www.voip-info.org/wiki-Asterisk+E164+Call+Routing
>
> Behold the beauty of a loop :-)
> These are the pages I want to add more details to.
>
> From the later of the Wiki pages (that I added myself):
>
>   *.4.1.5.1 IN NAPTR 100 10 "u" "IAX2+E2U" 
> "!^\\+*(.*)$!iax2:mtl-gateway/\\1!" .
>
> So I ask again, what's the full syntax? This is only one example...
>
> I would like to document the IAX2 URL used here.
>
> And, when ENUMbiz becomes a RFC, we should register "IAX2+E2U" with 
> IANA.
>
> /O
>
> _______________________________________________
> Asterisk-Dev mailing list
> Asterisk-Dev at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-dev
>

--
Registered Office: Roke Manor Research Ltd, Siemens House, Oldbury, Bracknell,
Berkshire. RG12 8FZ

The information contained in this e-mail and any attachments is confidential to
Roke Manor Research Ltd and must not be passed to any third party without
permission. This communication is for information only and shall not create or
change any contractual relationship.