call feature code

孙永光 <[email protected]> Fri, 22 Oct 2010 16:14:00 +0800

Newsgroups	gmane.ietf.sipping,gmane.ietf.sip-implementors,gmane.ietf.sip
Message-ID	<[email protected]>

Dear ALL

  can you tell me which RFC or draft explain the call feature code , eg.
call forwarding all *72

Thanks


-- 
msn:[email protected] <msn%[email protected]>

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