diff --git a/gen_polycom_directory.php b/gen_polycom_directory.php
index 5216a01..052472a 100755
--- a/gen_polycom_directory.php
+++ b/gen_polycom_directory.php
@@ -125,15 +125,14 @@ echo "Wrote $out_file with " . $root->childNodes->length . " contacts\n";
 
 /** Optional: push check-sync to re-download directory without reboot */
 if ($do_notify) {
-    // Use the extension list we already built
-    $notified = 0;
-    foreach ($rows as $r) {
-        $ext = trim((string)$r['extension']);
-        if ($ext === '') continue;
-        // In FreePBX, PJSIP endpoint id is typically the extension number
-        $cmd = "asterisk -rx \"pjsip send notify polycom-check-cfg endpoint " . escapeshellarg($ext) . "\"";
-        exec($cmd, $o, $rc);
-        if ($rc === 0) $notified++;
-    }
-    echo "Sent check-sync to $notified endpoints\n";
+    asterisk_bin=/usr/sbin/asterisk
+    endpoints=$($asterisk_bin -rx "pjsip show endpoints" \
+      | sed -n 's/^[[:space:]]*Endpoint:[[:space:]]\+\([^[:space:]/]\+\).*/\1/p' \
+      | grep -vE '^(anonymous|system)$' \
+      | sort -u)
+
+    for ep in $endpoints; do
+        echo "Sending check-sync to $ep"
+        $asterisk_bin -rx "pjsip send notify polycom-check-cfg endpoint $ep"
+    done
 }