diff --git a/lib/NGCP/Panel/Controller/API/Interceptions.pm b/lib/NGCP/Panel/Controller/API/Interceptions.pm
index e1d99d5d27..36118527ab 100644
--- a/lib/NGCP/Panel/Controller/API/Interceptions.pm
+++ b/lib/NGCP/Panel/Controller/API/Interceptions.pm
@@ -195,7 +195,7 @@ sub POST :Allow {
             $self->error($c, HTTP_UNPROCESSABLE_ENTITY, "Number is not active");
             last;
         }
-        $resource->{sip_username} = NGCP::Panel::Utils::Interception::username_to_regexp_pattern($num_rs->first,$sub->username);
+        $resource->{sip_username} = NGCP::Panel::Utils::Interception::username_to_regexp_pattern($c,$num_rs->first,$sub->username);
         $resource->{sip_domain} = $sub->domain->domain;
 
         if($resource->{x3_required} && (!defined $resource->{x3_host} || !defined $resource->{x3_port})) {
@@ -227,7 +227,7 @@ sub POST :Allow {
                 liid => $resource->{liid},
                 uuid => $resource->{uuid},
                 number => $resource->{number},
-                sip_username => NGCP::Panel::Utils::Interception::username_to_regexp_pattern($num_rs->first,$sub->username),
+                sip_username => NGCP::Panel::Utils::Interception::username_to_regexp_pattern($c,$num_rs->first,$sub->username),
                 sip_domain => $sub->domain->domain,
                 delivery_host => $resource->{x2_host},
                 delivery_port => $resource->{x2_port},
diff --git a/lib/NGCP/Panel/Role/API/Interceptions.pm b/lib/NGCP/Panel/Role/API/Interceptions.pm
index 70b0156a08..a12b50d23c 100644
--- a/lib/NGCP/Panel/Role/API/Interceptions.pm
+++ b/lib/NGCP/Panel/Role/API/Interceptions.pm
@@ -129,7 +129,7 @@ sub update_item {
     return unless($sub && $reseller);
 
     $resource->{reseller_id} = $reseller->id;
-    $resource->{sip_username} = NGCP::Panel::Utils::Interception::username_to_regexp_pattern($voip_number,$sub->username);
+    $resource->{sip_username} = NGCP::Panel::Utils::Interception::username_to_regexp_pattern($c,$voip_number,$sub->username);
     $resource->{sip_domain} = $sub->domain->domain;
 
     if($resource->{liid} && ($old_resource->{liid} ne $resource->{liid})) {
@@ -157,7 +157,7 @@ sub update_item {
 
     my $res = NGCP::Panel::Utils::Interception::request($c, 'PUT', $item->uuid, {
         number => $resource->{number},
-        sip_username => NGCP::Panel::Utils::Interception::username_to_regexp_pattern($voip_number,$sub->username),
+        sip_username => NGCP::Panel::Utils::Interception::username_to_regexp_pattern($c,$voip_number,$sub->username),
         sip_domain => $sub->domain->domain,
         delivery_host => $resource->{delivery_host},
         delivery_port => $resource->{delivery_port},
diff --git a/lib/NGCP/Panel/Utils/Interception.pm b/lib/NGCP/Panel/Utils/Interception.pm
index 828ccc364e..cf34a1d102 100644
--- a/lib/NGCP/Panel/Utils/Interception.pm
+++ b/lib/NGCP/Panel/Utils/Interception.pm
@@ -84,15 +84,28 @@ sub _init {
 
 sub username_to_regexp_pattern {
 
-    my ($voip_number,$username) = @_;
+    my ($c,$voip_number,$username) = @_;
+
+    # $c is intended to use $c->config vars here.
+    # vsc.clir_code is not part of the panel conf, so
+    # the global conf would be required to load to get it.
+    # as this is not done elsewhere in panel code yet, we leave
+    # that as todo for now, and capture any vsc codes.
+    my $vsc_pattern = '(\*\d+\*)?';
+    #my $vsc_pattern = '(\*31\*)?';
+
     my @pattern_elements = ();
-    #1. "local format": concat(concat('0',ac),sn):
-    push(@pattern_elements,'0' . $voip_number->ac . $voip_number->sn);
-    #2. "e164 format": concat(cc,ac,sn):
-    push(@pattern_elements,$voip_number->cc . $voip_number->ac . $voip_number->sn);
-    #3. "international format": concat(concat('00',cc),ac,sn):
-    push(@pattern_elements,'00' . $voip_number->cc . $voip_number->ac . $voip_number->sn);
-    push(@pattern_elements,quotemeta($username));
+    # longest to shortest:
+
+    #1. the sip username itself:
+    push(@pattern_elements,$vsc_pattern . quotemeta($username));
+    #2. "international format": concat(concat('00',cc),ac,sn):
+    push(@pattern_elements,$vsc_pattern . '00' . $voip_number->cc . $voip_number->ac . $voip_number->sn);
+    #3. "e164 format": concat(cc,ac,sn):
+    push(@pattern_elements,$vsc_pattern . $voip_number->cc . $voip_number->ac . $voip_number->sn);
+    #4. "local format": concat(concat('0',ac),sn):
+    push(@pattern_elements,$vsc_pattern . '0' . $voip_number->ac . $voip_number->sn);
+
     return '^(' . join('|',@pattern_elements) . ')$';
 
 }