  modparam("lost", "xavp_responce", "held_responce")
...
  lost_held_dereference("$(var(url){s.unbracket})", "emergencyDispatch", "civic geodetic", "$var(pidf)", "$var(err)");
  switch ($xavp(held_responce[0]=>HELD_ERROR_CODE)) {
    case "responceWithPresence":
      route(ADD_LOCATION_BY_VALUE);
    case "responceWithLocationUriSet":
      route(ADD_LOCATION_BY_REFERENCE);
    case "responceWithPresenceAndLocationUriSet":
      route(ADD_LOCATION_BY_VALUE);
      route(ADD_LOCATION_BY_REFERENCE);
    case "badHeldResponce":
      route(TRY_OTHER_LOCATION_METHOD);
    case "locationUnknown":
      xlog(L_ERR, "Received LIS error response: $(varLisErrorMessage)");
      route(TRY_DEFAULT_PSAP);
    case "generalLisError":
      xlog(L_ERR, "Received unexpected LIS error response: $(varLisErrorMessage)");
      route(TRY_OTHER_LOCATION_METHOD);
    default:
      xlog(L_WARNING, "Received unexpected LIS response: $xavp(held_responce[0]=>HELD_ERROR_CODE) - $xavp(held_responce[0]=>HELD_ERROR_MESSAGE)");
      route(TRY_DEFAULT_PSAP);
  }