26 feb 2009 kl. 09.19 skrev 吉川 智之:

> Oh, thanks a lot,
>
> thx and regards,
> YOSHIKAWA Tomoyuki.
>
>> On Thu, Feb 26, 2009 at 7:29 AM, Johansson Olle E <[email protected]>  
>> wrote:
>>
>>>> IMO, "user=phone" shows user part, xxxx@, indicate TEL-URL.
>>>
>>> Where is this documented?
>>
>> rfc3261, 19.1.1:
>>
>>         The set of valid telephone-subscriber strings is a subset of
>>         valid user strings.  The user URI parameter exists to
>>         distinguish telephone numbers from user names that happen to
>>         look like telephone numbers.  If the user string contains a
>>         telephone number formatted as a telephone-subscriber, the  
>> user
>>         parameter value "phone" SHOULD be present.
>>
>> (also read 19.1.6).
>>

I've seen that - but that's not a reference to a Tel: uri. In my  
opinion, this is
very vague and implementations differ a lot. I've seen implementations
that require only digits when user=phone is set. The Tel: Uri allows  
other
characters, especially the "+".

/O
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