What is LAP-D?
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What happens when a call is set up?
How many filters can be applied to a SETUP message?
What protocols are used?
Name the two forms in which an ISDN service can be provided to the user. ISDN can be supplied to the user in two forms:
An ISPBX can behave like a single user and a network - true or false? True.?
What are TEIs?
Why is rate adaptation necessary?
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?
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.
How configuration errors in the ISPBX can prevent successful connections?
Number of devices equals number of subscriber numbers required for MSN - true or false?
call flow in nss ? and what is sri signal?