What is 2B1Q?
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How the structures of BRI and PRI compare
How users are connected to a public ISDN through an ISPBX?
What must each SETUP message contain?
If none of the equipment connected to an NT1 requires a power supply through the interface, do I need to attach the NT1 to the mains?
What are the two types of equipment that can be used on ISDN called?
What is the Frame Format ?
What channel do the call management messages use?
 What is the name of the reference point that is located on the user side of an NT1?
How ISDN and analogue networks interact?
What filters are used when implementing MSN?
What are Protocols on B and D channels?
How ISDN allows multiple devices to share a single line?