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What is the difference between H.323 and SIP?

Learn about the differences between H.323 and SIP.

What is the difference between H.323 and SIP?
I think one of the best websites discussing these differences is Packetizer. You can find the detailed discussion H.323 versus SIP: A Comparison here, including a side-by-side comparison.
This was first published in September 2009

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