anchor.diff:              lists:keystore(headers, 1, Opts, {headers, Headers2})
       end,
       Opts2 = lists:flatten(Opts1++[Contact, {to, as_from}]),
  -    send(AppId, 'REGISTER', Dest, Opts2).
  +    send_any(AppId, 'REGISTER', Dest, Opts2).
   
   
   %% @doc Sends an INVITE request.
  
positive.code:     result() | {error, error()}.
  
  options(AppId, Dest, Opts) ->
      send(AppId, 'OPTIONS', Dest, Opts).
  
  
  %% @doc Sends a REGISTER request.
  
negative.code:     result() | {error, error()}.
  
  bye(AppId, DialogSpec, Opts) ->
      send_dialog(AppId, 'BYE', DialogSpec, Opts).
  
  
  %% @doc Sends an <i>INFO</i> for a current dialog.
  