diff --git a/lib/NGCP/Panel/Role/API/PbxDevices.pm b/lib/NGCP/Panel/Role/API/PbxDevices.pm
index 249e536fcc..db104e9ab0 100644
--- a/lib/NGCP/Panel/Role/API/PbxDevices.pm
+++ b/lib/NGCP/Panel/Role/API/PbxDevices.pm
@@ -217,8 +217,8 @@ sub update_item {
 
         $line->{line_type} = delete $line->{type};
 
-        if (defined $line->{target_number} && $line->{target_number} !~ /^[0-9#*]+$/) {
-            $self->error($c, HTTP_UNPROCESSABLE_ENTITY, "Invalid 'target_number' ($line->{target_number}), can contain only '0-9' numbers and '#','*' characters");
+        if (defined $line->{target_number} && $line->{target_number} !~ /^[0-9#*+]+$/) {
+            $self->error($c, HTTP_UNPROCESSABLE_ENTITY, "Invalid 'target_number' ($line->{target_number}), can contain only '0-9' numbers and '+','#','*' characters");
             return;
         }
 
diff --git a/share/templates/customer/details.tt b/share/templates/customer/details.tt
index 5581c0c3e4..d0e0937ce5 100644
--- a/share/templates/customer/details.tt
+++ b/share/templates/customer/details.tt
@@ -1107,7 +1107,7 @@ function create_ranges_annotations(id,type,ranges){
                 '<input type="checkbox" class="switch" ' + isSwitchOn + ' name="line.' + linecmt + '.switch" id="line.' + linecmt + '">' +
                 '<span class="slider round"></span>' +
                 '</label>' +
-                '<input type="text" class="subinput" oninput="this.value = this.value.replace(/[^0-9#*]/, \'\')" name="line.' + linecmt + '.target_number" id="line.' + linecmt + '.target_number" ' + targetNumber + '>' +
+                '<input type="text" class="subinput" oninput="this.value = this.value.replace(/[^0-9#*+]/, \'\')" name="line.' + linecmt + '.target_number" id="line.' + linecmt + '.target_number" ' + targetNumber + '>' +
                 '<select class="subselect" name="line.' + linecmt + '.subscriber_id" id="line.' + linecmt + '.subscriber_id">' +
                 '<option value="0">'+(linekeyCurrent ? '[% c.loc("Subscriber") %]' : '[% c.loc("None") %]' )+'</option>' +
 [% FOR sub IN subscribers.all -%]