From 29c80cb417d5a365ab193ed582310ff36c92ad5b Mon Sep 17 00:00:00 2001
From: FusionPBX <markjcrane@gmail.com>
Date: Fri, 15 Nov 2019 11:49:21 -0700
Subject: [PATCH] Update functions.php

---
 resources/functions.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/resources/functions.php b/resources/functions.php
index 7368db8023..70d8a10dc1 100644
--- a/resources/functions.php
+++ b/resources/functions.php
@@ -1656,7 +1656,12 @@ function number_pad($number,$n) {
 				}
 			//add prefix
 				if (strlen($prefix) > 0) {
-					$prefix = $prefix.'?';
+					if (strlen($prefix) == 1) {
+						$prefix = $prefix.'?';
+					}
+					else {
+						$prefix = '(?:'.$prefix.')?';
+					}
 				}
 			//convert N,X,Z syntax to regex
 				$string = str_ireplace("N", "[2-9]", $string);