2
Connection to Supply Mains
Important
The wires in the mains lead supplied with this equipment are coloured in accordance with the following code:
Green and Yellow
Earth
Blue
Neutral
Brown
Live
As the colours of the cores in the mains lead of this equipment may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
•
The core which is coloured green and yellow must be connected to the terminal in the plug which is
marked with the letter E or by the earth symbol
, or coloured green and yellow.
•
The core which is coloured blue must be connected to the terminal which is marked with the letter N or
coloured black.
•
The core which is coloured brown must be connected to the terminal which is marked with the letter L or
coloured red.
SAFETY WARNING
This equipment must be earthed.
For pluggable equipment, the mains socket outlet shall be installed near the equipment and be easily accessible.
Interconnection circuits between this modem and any other equipment should be such that the equipment
continues to comply with the requirements of clause 4.2 of EN41003 for TNV (Telephone Network Voltage)
circuits and clause 2.3 of EN60950 for SELV (Safety Extra Low Voltage) circuits after making connection
between circuits.
The power supply must be properly connected and switched on before the modem will work correctly.
Ringer Equivalence Number
The Ringer Equivalence Number (REN) is a customer guide indicating approximately the maximum number of
items of apparatus that should be connected simultaneously to the telephone line. The sum of the RENs should
not exceed 4. This value includes any BT provided instrument which may be assumed to have an REN of 1
unless marked otherwise. The REN of the 3900 Series modems is 3.
Warning. Do not connect any other items of apparatus in parallel with this modem.
