2011/6/21 어진수 <[email protected]>:
> RFC 3261 says that a UAC wanting to hide its identity should use a From like 
> this:
>
>  sip:anonymous at anonymous.invalid
>
> So then, How to generate a Contact Header?
> I wonder a Contact header form in the anonymous call.
>
> Which one is valid in the following?
> sip:[email protected]
> OR
> sip:[email protected]

A UAC can generate whatever Contact URI with whatever username (i.e:
sip:qjewhkajshdkajdshkak@IP). Of course the UAC must remember such
Contact to identify the target of incoming requests.


-- 
Iñaki Baz Castillo
<[email protected]>

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