ITU H.323

H.323 "Packet-based multimedia communications systems" refers to a family of VoIP protocols including H225 and H245, see VOIPProtocolFamily for an overview.


H.323 was introduced by the ITU-T in 1996.

Protocol dependencies

  • H.323 is independent of the underlying transport protocol, but uses H225 and H245

Example traffic

XXX - Add example traffic here (as plain text or Wireshark screenshot).


The H.323 dissector is (fully functional, partially functional, not existing, … whatever the current state is). Since Wireshark 0.10.7, a list of H.323 conversations was added, see Statistics->H.323 Conversations…

Preference Settings

There are no H.323 related preference settings.

Example capture file

Display Filter

As H.323 isn't a protocol itself, you cannot filter on it. But you can filter on H245 and H225.

Capture Filter

You cannot directly filter H.323 protocols while capturing.

External links


Imported from on 2020-08-11 23:14:36 UTC