no veo porque no te imprime
Código PHP:
<table class="table table-bordered table-hover">
<tr>
<td width="105"><div align="center">TEL</div></td>
<td width="105"><div align="center">NO TEL</div></td>
</tr>
<?
foreach($tel as $field)
{
if($area_estudio != $field['codigoarea']) {
echo '<tr><td colspan=2><div align=center><strong> </strong></div></td></tr>';
}
echo '<tr>';
echo '<td><div align=center>1</div></td>';
echo '<td><div align=center>2</div></td>';
echo '</tr>';
}
?>
</table>