<div dir="ltr"><div><div><div><div>Hi,<br><br></div>when I place a call over the gateway to the PTSN I see the dialed number without<br></div>the leading 0 prefix in the history of my Grandstream GXP2140. Is there a way <br></div>to add the 0 back again?<br><br></div>Thank you<br><div><div><div><br>&lt;include&gt;<br> &lt;extension name=&quot;isdn-outbound&quot;&gt;<br>  &lt;condition field=&quot;destination_number&quot; expression=&quot;^0(\d+)$&quot;&gt;<br>   &lt;action application=&quot;set&quot; data=&quot;effective_caller_id_number=${outbound_caller_id_number}&quot;/&gt;<br>   &lt;action application=&quot;set&quot; data=&quot;effective_caller_id_name=${outbound_caller_id_name}&quot;/&gt;<br>   &lt;action application=&quot;bridge&quot; data=&quot;sofia/gateway/isdn/$1&quot;/&gt;<br>  &lt;/condition&gt;<br> &lt;/extension&gt;<br>&lt;/include&gt;<br><br></div></div></div></div>