diff --git a/config.default.php b/config.default.php
index 23b2ca67..aef4fdee 100644
--- a/config.default.php
+++ b/config.default.php
@@ -255,6 +255,18 @@ if (!defined('ALLOW_RESPONDENT_SELECTOR')) define ('ALLOW_RESPONDENT_SELECTOR',t
  * Display a faster alternate interface where VoIP is disabled
  */
 if (!defined('ALTERNATE_INTERFACE')) define ('ALTERNATE_INTERFACE',false);
+/**
+ * Alow to choose the start part of the link for alternate interface, before phone
+ */
+if (!defined('ALTERNATE_INTERFACE_CALLSTARTURL')) define ('ALTERNATE_INTERFACE_CALLSTARTURL','callto:://');
+/**
+ * Alow to choose the end part of the link for alternate interface, after phone
+ */
+if (!defined('ALTERNATE_INTERFACE_CALLENDURL')) define ('ALTERNATE_INTERFACE_CALLENDURL','');
+/**
+ * Allwo to set some specific attributes (for example target='_blank') to call url
+ */
+if (!defined('ALTERNATE_INTERFACE_ATTRIBUTEURL')) define ('ALTERNATE_INTERFACE_ATTRIBUTEURL','');
 
 /**
  * Number of log records to display
diff --git a/status_interface2.php b/status_interface2.php
index ec4322c4..ed485dcf 100644
--- a/status_interface2.php
+++ b/status_interface2.php
@@ -215,13 +215,16 @@ if ($ca)
 			//By default, the selected radio button should have a "call" started for it
 		 	//When then next one clicked, it should bring up call screen if no outcome otherwise start new call
 			//print "<div>";print "</div>";
+			$callstarturl = ALTERNATE_INTERFACE_CALLSTARTURL;
+			$callendurl = ALTERNATE_INTERFACE_CALLENDURL;
+			$extraattributes = ALTERNATE_INTERFACE_ATTRIBUTEURL;
 			foreach($rs as $r)
 			{
 				print "<form method='post' action='?'>
 						<p>
 						<input onclick='this.form.submit();' type='radio' name='contactphone' value='{$r['contact_phone_id']}' id='contactphone{$r['contact_phone_id']}' {$r['checked']}/>&ensp;
 						<label for='contactphone{$r['contact_phone_id']}'>{$r['phone']}";
-						if ($r['checked']) print "&emsp;<a href='callto:{$r['phone']}' class='btn btn-primary btn-xs'><i class='fa fa-phone fa-fw'></i>&ensp;" . T_('Dial') . "</a>";
+						if ($r['checked']) print "<br>&emsp;<a href='{$callstarturl}{$r['phone']}{$callendurl}' {$extraattributes} class='btn btn-primary btn-xs'><i class='fa fa-phone fa-fw'></i>&ensp;" . T_('Dial') . " {$r['phone']}</a>";
 						if (!empty($r['description'])) print " - " . $r['description'];
 						print "</label>
 						</p>