root/modules/branches/2.2/callwaiting/functions.inc.php

<?php

function callwaiting_get_config($engine) {
  $modulename = 'callwaiting';
  
  // This generates the dialplan
  global $ext;  
  switch($engine) {
    case "asterisk":
      if (is_array($featurelist = featurecodes_getModuleFeatures($modulename))) {
        foreach($featurelist as $item) {
          $featurename = $item['featurename'];
          $fname = $modulename.'_'.$featurename;
          if (function_exists($fname)) {
            $fcc = new featurecode($modulename, $featurename);
            $fc = $fcc->getCodeActive();
            unset($fcc);
            
            if ($fc != '')
              $fname($fc);
          } else {
            $ext->add('from-internal-additional', 'debug', '', new ext_noop($modulename.": No func $fname"));
            var_dump($item);
          } 
        }
      }
    break;
  }
}

function callwaiting_cwon($c) {
  global $ext;

  $id = "app-callwaiting-cwon"; // The context to be included

  $ext->addInclude('from-internal-additional', $id); // Add the include from from-internal

  $ext->add($id, $c, '', new ext_answer('')); // $cmd,1,Answer
  $ext->add($id, $c, '', new ext_wait('1')); // $cmd,n,Wait(1)
  $ext->add($id, $c, '', new ext_macro('user-callerid')); // $cmd,n,Macro(user-callerid)
  $ext->add($id, $c, '', new ext_setvar('DB(CW/${CALLERID(number)})', 'ENABLED')); 
  $ext->add($id, $c, '', new ext_playback('call-waiting&activated')); // $cmd,n,Playback(...)
  $ext->add($id, $c, '', new ext_macro('hangupcall')); // $cmd,n,Macro(user-callerid)
}


function callwaiting_cwoff($c) {
  global $ext;

  $id = "app-callwaiting-cwoff"; // The context to be included

  $ext->addInclude('from-internal-additional', $id); // Add the include from from-internal

  $ext->add($id, $c, '', new ext_answer('')); // $cmd,1,Answer
  $ext->add($id, $c, '', new ext_wait('1')); // $cmd,n,Wait(1)
  $ext->add($id, $c, '', new ext_macro('user-callerid')); // $cmd,n,Macro(user-callerid)
  $ext->add($id, $c, '', new ext_dbdel('CW/${CALLERID(number)}')); 
  $ext->add($id, $c, '', new ext_playback('call-waiting&de-activated')); // $cmd,n,Playback(...)
  $ext->add($id, $c, '', new ext_macro('hangupcall')); // $cmd,n,Macro(user-callerid)
}
?>