On register, sometimes my voip client got SIP/2.0 482 Request merged  
sometimes got 200 ok.

482 also means loop detected. my client only has one account logged in  
only one place, and no proxy, can I take 482 as 200 OK?

Thanks.

from RFC 3261:

"8.2.2.2 Merged Requests

   If the request has no tag in the To header field, the UAS core MUST
   check the request against ongoing transactions.  If the From tag,
   Call-ID, and CSeq exactly match those associated with an ongoing
   transaction, but the request does not match that transaction (based
   on the matching rules in Section 17.2.3), the UAS core SHOULD
   generate a 482 (Loop Detected) response and pass it to the server
   transaction."