How ISDNs are connected together?
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What is LAP-D?
How many devices may be connected to a PRI?
What channel does the end-to-end connection use?
What do the layers look like?
What is the purpose of the switch that all NT1s have?
Why is there only one D channel in each interface?
How Analogue fax and modem over ISDN?
How to vary the the amount of bandwidth you have available to you?
What is the significance of the TEI in B channel communication?
Name two significant differences between B and D channels.
What are B channel charateristics?
What is the initial call request message called?