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Re: percent-encoding in tel URIs

From: Erik Wilde <dret@berkeley.edu>
Date: Mon, 30 Jun 2008 09:51:21 -0700
Message-ID: <48690F09.1060008@berkeley.edu>
To: "uri@w3.org" <uri@w3.org>
CC: Cullen Jennings <fluffy@cisco.com>, Lisa Dusseault <lisa@osafoundation.org>


thanks for the emails regarding my question about reusing parts of the 
tel syntax. i am not quite sure what all of that means, since it seems 
that there are issues with the current syntax. 3966 needs to be fixed 
and there is nothing i could/should reference right now?

the basic idea was that quite a bit of effort went into the tel URI 
scheme, and that the sms URI scheme should reuse the tel scheme's model 
and syntax of what a telephone number is. this way, implementations for 
parsing telephone numbers could be reused.

but: now that you have pointed out the errata, i have looked at these 
and they turn out to be very relevant for me, because erratum 203 says that

isdn-subaddress      = ";isub=" 1*uric

should be replaced with

isdn-subaddress      = ";isub=" 1*paramchar

looking at the corrected syntax, it seems to me that a literal "," is 
not allowed to be part of an isdn-subaddress anymore, which would solve 
my basic problem of whether the sms URI scheme can use a literal "," for 
separating telephone numbers.

so here is my rephrased question: since "," is not allowed as a part of 
a telephone number in the telephone-subscriber part of a tel URI, can i 
use the telephone-subscriber syntax to replace the sms-number production 
in the proposed sms URI scheme? i just want to make sure that the syntax 
will be correct.

tel: http://tools.ietf.org/html/rfc3966
sms: http://tools.ietf.org/html/draft-wilde-sms-uri-15

thanks a lot and kind regards,

erik wilde   tel:+1-510-6432253 - fax:+1-510-6425814
        dret@berkeley.edu  -  http://dret.net/netdret
        UC Berkeley - School of Information (ISchool)
Received on Monday, 30 June 2008 16:52:23 UTC

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