diff --git a/nmap-service-probes b/nmap-service-probes
index 9285aa0ea..d9e41fc64 100644
--- a/nmap-service-probes
+++ b/nmap-service-probes
@@ -5301,6 +5301,14 @@ match ldap m|^0\.\x02\x01\x01a\)\n\x010\x04\0\x04\"Failed, anonymous bind not al
 # This came off a KIRK Wireless VoIP adapter which I *think* uses Cisco LDAP ??
 match ldap m|^0\x0c\x02\x01\x01a\x07\n\x011\x04\0\x04\0$| p/Cisco LDAP server/
 
+# This probe sends a SIP OPTIONS request.
+# Most of the numbers, usernames, and hostnames are abitrary.
+##############################NEXT PROBE##############################
+Probe TCP SIPOptions q|OPTIONS sip:nm SIP/2.0\r\nVia: SIP/2.0/TCP nm;branch=foo\r\nFrom: <sip:nm@nm>;tag=root\r\nTo: <sip:nm2@nm2>\r\nCall-ID: 50000\r\nCSeq: 42 OPTIONS\r\nMax-Forwards: 70\r\nContent-Length: 0\r\nContact: <sip:nm@nm>\r\nAccept: application/sdp\r\n\r\n|
+rarity 5
+ports 5060
+
+
 ##############################NEXT PROBE##############################
 Probe TCP LANDesk-RC q|\x54\x4e\x4d\x50\x04\0\0\0\x54\x4e\x4d\x45\0\0\x04\0|
 rarity 6