H.323 Cheatsheet

These notes taken from the Nortel VoIP Technologies and CVoice 6.0 class book

Well known ports

H.323 suite

Video

Components

Cisco capable devices

Protocols

Basic Conversation

Term endpt A GK Term endpt B
---ARQ-->    
<--ACF---

--Setup->
--Setup-->
<-Call Proceeding--
<-Call Proceeding--


<--ARQ---


--ACF/ARJ->
<-Alerting--
<-Alerting--
<-Connect--
<-Connect--



<-H.245 Capabil Exch->
<-H.245 Capabil Exch->
--H.245 Open Log Chan->
--H.245 Open Log Chan->
--H.245 Open Log Chan Ack->
--H.245 Open Log Chan Ack->



<------RTP/RTCP------>

H.225 Setup
H.225 POTS/PSTN Call Setup
H.245 Cap Exchange
H.245 Open Logical chna
H.245 Open Log Chan Ack

Fast Connect Call Setup
H.225/H.245 Setup (combine Q.931/H.225 call signaling and H.245 cap/log channel exchange)
H.225/H.245 Connect

Design Considerations

Gatekeeper zones

Cisco Notes

H.323 Gateway can register by H.323 Gatekeeper.

Advantages of H.323 gateways


H.323 Network COmponents


MCUs

3 types of conferences Distributed Deployment Model - Gatekeeper should be used...

Relationships