What do the layers look like?
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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 TEIs?
 What is the name of the reference point that is located on the user side of an NT1?
What must each SETUP message contain?
Explain the call flow in nss and what is sri signal?
How many devices can be connected to a standard BRI line?
How users are connected to a public ISDN through an ISPBX?
What is the significance of the TEI in B channel communication?
What is 2B1Q?
A device is configured for automatic TEI. What is its address immediately after being switched on - before it starts communicating with the network?
What determines which of these two protocols to use?
A fax call call might be designated as a generic analogue call or specifically as a fax call - true or false?