BT NTU6 - About This Guide; About NTU6

1 About this guide
This Operating Guide gives you information on the network terminating
unit 6 (NTU6), including:
• What the display means
• How to use the test facilities
• What to do if you have a problem.
2 About NTU6
A dedicated digital private circuit service, offering either data or voice
transmission.
A national private circuit
An international private circuit
Operating guide
4
Customer
Terminal
Equipment
Network
Terminating
Unit
Network
Terminating
Unit
Customer
Terminal
Equipment
KiloStream circuit
Network
Customer's Premises Customer's Premises
Customer
Terminal
Equipment
Network
Terminating 
Unit
Network
Terminating 
Unit
Customer
Terminal
Equipment
International KiloStream circuit
Network
UK Customer's Premises Distant Country Customer's Premises