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Telecom Call Flow Diagrams

GSM, ISUP. SIP, H.323 and V5.2 call flow diagrams and message sequence charts can be found at:

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-- EventStudio System Designer 2.5 -

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System Design and Call Flow Modeling Tool

Reply to
EventHelix.com
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Sweet! I looked at the one for SIP and it became immediately clear why in some cases I get double ring tone. Seems my router supplies ring tone as well as opening the path to the remote switch.

Reply to
Tony P.

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