Operating guide
Private Circuits
NETWORK TERMINATING UNIT 6
KiloStream Private Circuits
International KiloStream Private Circuits
To report a fault with your KiloStream private circuit, please ring your
BT Service Centre on this number:
Please quote:
your circuit type
your circuit number(s)
your end address
For International KiloStream private circuits please ring the number
provided in your customer handover information.
Operating guide
2
Contents
1 About this guide 4
2 About NTU6 4
3 The equipment you’ll see 5
Single NTU 5
Multiple NTU 5
Cabling distance 6
4 Getting started 7
Examining the set-up of your NTU 8
Looking at the corrent status of your NTU 12
5 If you have a problem 9
6 Testing your private circuit 10
Using the test menu 10
Testing your terminal equipment 11
Testing the connection from the network 11
Testing the operation of the entire circuit 12
7 How to report a fault 14
Operating guide
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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
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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
3 The equipment you’ll see
BT digital private circuits terminate at your premises on a network
terminating unit (NTU) which is provided within the rental price.
Any on-site wiring and equipment beyond the NTU is your responsibility
and maintained by the relevant contractor. This may be BT or an
independent supplier.
One of our engineers will connect the NTU to the BT network. If you
alter the line connections in any way, you will set off remote alarms
within the BT network and your service may be affected
Single NTU
If you’ve ordered a single circuit, the unit is contained in a blue
rectangular box. The lamps on the front of the unit, in conjunction with
the liquid crystal display (LCD), show the operating state of the circuit.
Front view of KiloStream NTU6 single unit
Multiple NTU
If you’ve ordered a number of lines, or a network of services, you will
need a multiple NTU. This normally consists of a series of NTUs in
‘card’ form. Each ‘card’ will be shelf mounted in a stacking system.
Operating guide
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RX NRDY
RXD
TM
FAULT
TOGGLE PROG
MENU SCROLL
TX NRDY
Liquid Crystal Display
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