What is Fractional PRI?
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What Bearer Capabilities are and on which channel they reside?
 What is the name of the reference point that is located on the user side of an NT1?
Why use ISDN?
How many devices can be connected to a standard BRI line?
What are SAPIs?
Number of devices equals number of subscriber numbers required for MSN - true or false?
Explain the call flow in nss and what is sri signal?
What determines which of these two protocols to use?
What is Soft-fax and Soft-modem?
What is the difference between Internet and ISDN ? Is both are same or is there any specific difference ...?
How many filters can be applied to a SETUP message?
Why does there need to be a broadcast TEI?