[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]
reference=[http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers#Ports_1024_to_49151 Wikipedia: List of TCP and UDP port numbers]
reference=[http://wiki.freeswitch.org/wiki/Firewall FreeSWITCH Wiki: Firewall]
reference=[http://lxr.free-electrons.com/source/include/linux/netfilter/nf_conntrack_h323.h Free Electrons: Linux Cross Reference - nf_conntrack_h323.h]

[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]
reference=[http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers#Ports_1024_to_49151 Wikipedia: List of TCP and UDP port numbers]
reference=[http://wiki.freeswitch.org/wiki/Firewall FreeSWITCH Wiki: Firewall]
reference=[http://lxr.free-electrons.com/source/include/linux/netfilter/nf_conntrack_h323.h Free Electrons: Linux Cross Reference - nf_conntrack_h323.h]