[SIPForum-discussion] [SIP-Forum discussion] Support of # into Request-Uri

[Lila Octavian]

Hi Federico,

As far as i know # is not supported in URI.
It can be added only in tel: format.

I have the same question a year ago ,and i found the answer in rfc3261 :

SIP-URI          =  "sip:" [ userinfo ] hostport
 uri-parameters [ headers ]

userinfo         =  ( user / telephone-subscriber ) [ ":" password ] "@"

user             =  1*( unreserved / escaped / user-unreserved )

user-unreserved  =  "&" / "=" / "+" / "$" / "," / ";" / "?" / "/"

So until now if you have user ,you are not allowed to use #.
If you have tel:
The BNF for telephone-subscriber can be found in RFC 2806 [9].  Note,
however, that any characters allowed there that are not allowed in
the user part of the SIP URI MUST be escaped.
In RFC 2806 you will find that # is allowed.

Regards,
Octavian Lila


Regards,
Octavian Lila

--- On Wed, 12/1/10, Federico piesio <fede.legge at gmail.com> wrote:

From: Federico piesio <fede.legge at gmail.com>
Subject: [SIPForum-discussion] [SIP-Forum discussion] Support of # into Request-Uri
To: discussion at sipforum.org
Date: Wednesday, December 1, 2010, 10:36 AM

Dear members, I have one doubt regarding use of digit # into R-Uri. The vendor of Class4 softswitch is saying that RFC 3261 specifies that # is not supported as a digit in a sip uri or tel uri, so their implementation is that softswitch receives a R-Uri containing # and changes digit "#" with extradecadic "C" when sending ahead the INVITE. 

Does anyone know about this limitation in SIP? I'm really not sure of what vendor states about. I didn't find anything about in 3261 or 2806.
Thank youRegards
Federico

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