What is the initial call request message called?
What Bearer Capabilities are and on which channel they reside?
What is the D channel used for?
What the B and D channels do?
In order to be able to plug analogue devices into sockets on an NT1, what extra item of equipment would need to be included within the the NT1?
What are the two options for implementing fax using an internal ISDN card?
What address does an ISDN PRI line always use?
What does ISDN give you?
What is the essential difference between ISDN and the ordinary telephone system (PSTN)?
What is the maximum number of simultaneous connections supported by a Primary Rate Interface?
What is 2B1Q?
Name two significant differences between B and D channels.
What is the device inside an ISDN telephone that converts voice into digits?