anchor.diff:  	    BranchBase
       end.
   
  +
   localhostname(Hostname) ->
       util:casegrep(Hostname, sipserver:get_env(myhostnames)).
  
positive.code: 	    transactionlayer:send_response_handler(THandler, 501, "Not Implemented")
      end.
  
  process_request(Request, LogTag) when record(Request, request), Request#request.method == "REGISTER" ->
      {User, Pass, Host, Port, Parameters} = Request#request.uri,
      case localhostname(Host) of
  
negative.code: 	    throw({siperror, 420, "Bad Extension", [{"Unsupported", Require}]})
      end.
  
  
  get_branch_from_handler(TH) ->
      CallBranch = transactionlayer:get_branch_from_handler(TH),
      case string:rstr(CallBranch, "-UAS") of
  