[H323 call signaling]
title=H.323 Call Signaling
description=H.323 Call Signaling
ports=1720/tcp
modules=nf_conntrack_h323;nf_nat_h323;
categories=Network;Telephony;Video Conference;
reference=[http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800c5e0d.shtml#h225callcontrol Cisco: Understanding H.323 Gatekeepers]

[H323 gatekeeper discovery]
title=H.323 discovery
description=H.323 multicast gatekeeper discovery (H.225)
ports=1718/udp
categories=Network;Telephony;Video Conference;
reference=[http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800c5e0d.shtml#h225rassig Cisco: Understanding H.323 Gatekeepers]

[H323 RAS messages]
title=H.323 RAS
description=H.323 Gatekeeper Registration, Admission and Status (H.225)
ports=1719/udp
modules=nf_conntrack_h323;nf_nat_h323;
categories=Network;Telephony;Video Conference;
reference=[http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800c5e0d.shtml#h225rassig Cisco: Understanding H.323 Gatekeepers]