What are SAPIs?
What are BRI and PRI? What are Channels?
How the structures of BRI and PRI compare
What are SPIDs?
What do the layers look like?
What Bearer Capabilities are and on which channel they reside?
What item of equipment would be required to connect a modem to ISDN? A terminal adapter.
How users are connected to a public ISDN through an ISPBX?
What is the Frame Format ?
How can I get more information?
How to Establish the Link Layer?
How ISDN allows multiple devices to share a single line?
What protocols are used?
How to vary the the amount of bandwidth you have available to you?
What are TEIs?