What is the purpose of the switch that all NT1s have?
Answer / silpa
This switch controls termination and should be activated if any of the cables being used to attach devices to the ISDN is greater than 75m long.
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What address does an ISDN PRI line always use?
When multiple users on an ISPBX are making calls, how many users does the public ISDN network see?
What kind of cabling is used for a BRI?
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.
If none of the equipment connected to an NT1 requires a power supply through the interface, do I need to attach the NT1 to the mains?
What other method is there for converting synchronous and asynchronous data?
What are Protocols on B and D channels?
 What is the name of the reference point that is located on the user side of an NT1?
What are ISDN Services?
What are these types of NT1 known as?
How many devices may be connected to a PRI?
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: