What are TEIs?
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How the B and D channels share the line?
Where else is rate adaptation employed?
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 is the call termination message called?
What information also accompanies this message?
call flow in nss ? and what is sri signal?
What is the essential difference between them?
Where does this conversion normally take place?
What is the purpose of the switch that all NT1s have?
Why is this information significant?
What happens when a call is set up?
How configuration errors in the ISPBX can prevent successful connections?