What is Information Field Structure?
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What is the maximum number of simultaneous connections supported by a Primary Rate Interface?
How many devices may be connected to a BRI?
What are SPIDs?
What are the two protocols which perform rate adaptation?
What is the essential difference between ISDN and the ordinary telephone system (PSTN)?
Explain the call flow in nss and what is sri signal?
Number of devices equals number of subscriber numbers required for MSN - true or false?
What are the two options for implementing fax using an internal ISDN card?
Do users on an ISPBX have a D channel connection to the ISPBX or to the public ISDN network? The users on an ISPBX do not communicate directly with the public network at all.
What are SAPIs?
 What is the name of the reference point that is located on the user side of an NT1?
What device converts the signals between the ISDN and the PSTN networks?