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Un-Answered Questions { ISDN }
What is ISDN's history?
Why use ISDN?
What are BRI and PRI? What are Channels?
What do the layers look like?
What protocols are used?
What happens when a call is set up?
How can I get more information?
How ISDN allows multiple devices to share a single line?
What is 2B1Q?
What is the Frame Format ?
What is LAP-D?
What are SAPIs?
What are TEIs?
How to Establish the Link Layer?
What are SPIDs?
