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Published byCruz Faulks Modified over 10 years ago
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H.323 Making A (Very Simple) Call
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Client Gatekeeper Step 1: Query "Where is Wanda?"
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Client Gatekeeper Step 2: Database Lookup 1) Is client authenticated? 2) Is Wanda active in the database? 3) Then retrieve Wanda's address.
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Client Gatekeeper Step 3: Reply "Wanda is at 14.231.3.156."
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Client Step 4: Establish session with Wanda Wanda "Can we talk?" H.225 used to establish session
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Client Step 5: Negotiate features, abilities Wanda "G.729 okay?" H.245 used to agree on CODEC, etc.
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Client Step 6: Ring, Answer, and Conversation Begins Wanda "Blah, blah, and blah...""Reply, and more blah..."
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H.323 Protocols
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Credit... The preceding slide was flagrantly plagiarized, but I always cite my sources. You may view the H.323 protocols slide in its context at: http://www.protocols.com/pbook/h323.htm Signed, Bob ("Sosumee") Young
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