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call flow in nss ? and what is sri signal?
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 essential difference between ISDN and the ordinary telephone system (PSTN)?
What kind of cabling is used for a PRI?
What must each SETUP message contain?
What are TEIs?
What are Protocols on B and D channels?
What are B channel charateristics?
Why is this information significant?
What is Fractional PRI?
Why is there only one D channel in each interface?
What is the maximum number of simultaneous connections supported by a Primary Rate Interface?