anchor.diff:  
   %% ===========================================================================
   %% diameter callbacks
  -
  -%% peer_up/3
  -
  -peer_up(_SvcName, _Peer, State) ->
  -    State.
  -
  -%% peer_down/3
  -
  -peer_down(_SvcName, _Peer, State) ->
  -    State.
   
   %% pick_peer/4
   
  
positive.code:          {'Acct-Application-Id', [Dict:id()]},
           {application, [{alias, ?APP_ALIAS},
                          {dictionary, Dict},
                          {module, ?MODULE},
                          {answer_errors, callback}]}]).
  
  -define(SUCCESS, 2001).
  
negative.code:          stop/1]).
  
  %% diameter callbacks
  -export([pick_peer/4,
           prepare_request/3,
           handle_answer/4,
           handle_request/3]).
  
  -include("diameter.hrl").
  