Hi Dale,
Sorry, I confused with the meaning of 'user' word. I thought it is the
'user' part of ABNF syntax not 'userinfo' part of SIP URI in the below
statement.
"The set of valid telephone-subscriber strings is a subset of valid
user strings."
Thanks,
Anil
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Dale R.
Worley
Sent: Sunday, January 01, 2006 10:53 AM
To: Sip-Implementors
Subject: Re: [Sip-implementors] 'Use' syntax clarification
On Wed, 2005-12-28 at 12:56 -0800, Anil Bollineni wrote:
> According to RFC 3261 19.1.1
>
> "The set of valid telephone-subscriber strings is a subset of
valid
> user strings."
> Since the 'user' info part of SIP URL does not cover "#" symbol
> according rfc 3261 syntax for 'user'.
>
> According to RFC 2806, the syntax for telephone-subscriber is
>
> telephone-subscriber= 1*dtmf-digit
>
> dtmf-digit = "*" / "#" / "A" / "B" / "C" / "D"
> How can telephone-subscriber string is a subset of valid user string?
Read the BNF more carefully:
SIP-URI = "sip:" [ userinfo ] hostport
uri-parameters [ headers ]
SIPS-URI = "sips:" [ userinfo ] hostport
uri-parameters [ headers ]
userinfo = ( user / telephone-subscriber ) [ ":" password ] "@"
user = 1*( unreserved / escaped / user-unreserved )
As you can see, "telephone-subscriber" is *included* in "userinfo".
Dale
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