function listSipAccount( $option, $limitstart, $limit ) {
 global $mosConfig_absolute_path, $mainframe, $asterdb, $Itemid;
 require_once ($mosConfig_absolute_path.DIRECTORY_SEPARATOR."includes".DIRECTORY_SEPARATOR."pageNavigation.php");
 //getUserStateFromRequest not work in frontend
 //$search = $mainframe->getUserStateFromRequest("search{$option}", "search","");
 $search = strval(mosGetParam($_REQUEST, "search", "") );
 $search = strtolower(trim( $search ));
 $mainframe->setPageTitle( "SIP account list" ); 
 $total = asterProvHelper::totalSipAccounts( $search );
 $pageNav = new mosPageNav( $total, $limitstart, $limit );
 $rows = asterProvHelper::listSipAccounts($pageNav->limitstart, $pageNav->limit, $search);
 HTML_asterProv::showAccountList($option, $Itemid, $rows, $pageNav, $search);
} 
   

$limit        = intval( mosGetParam( $_REQUEST, 'limit', 50 ) );
$limitstart  = intval( mosGetParam( $_REQUEST, 'limitstart', 0 ) );  
   

 
 function showAccountList($option, $Itemid, &$rows, &$pageNav, &$search) {
  HTML_asterProv::showToolbar();
  $complink = "index.php?option=$option";
?>
  <form name="adminForm" method="post" action="index.php?option=<?php echo $option?>&Itemid=<?php echo $Itemid?>">
  <table width="100%">
  <tr>
   <td width="30%"><?php echo "Display ".$pageNav->writePagesCounter() ?></td>
   <td width="30%">Search account <input type="text" name="search" 
value="<?php echo $search?>" onchange="document.adminForm.submit();" class="inputbox" /></td>
   <td width="20%">Display per page <?php echo $pageNav->writeLimitBox($complink); ?></td>
  </tr>
  </table>
//...................
  <?php
  echo "<br /><div>".$pageNav->writePagesLinks($complink)."</div>";
  HTML_asterProv::showFooter(); 
 }