Paradyne COMSPHERE 3910, COMSPHERE 3911 Regulatory Information

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COMSPHERE 3900 Series Modems
Models 3910 and 3911
Government Requirements for Great Britain

Document Number 3910-A2-GK42-00

January 1994

Overview

This document highlights government requirements, safety warnings, installation procedures, features, and
functions that are unique to COMSPHERER 3900 Series modems installed within the United Kingdom. This
document is intended to be used in conjunction with the COMSPHERE 3900 Series Modems, Models 3910 and
3911 Point-to-Point/Multipoint, Installation and Operation Manual, Document No. 3910-A2-GN32. Please
consult this Installation and Operation Manual for overall operation of the 3900 Series modem.

Government Requirements for Great Britain

Facilities

This apparatus has been approved for use of the following facilities:

Any other usage will invalidate the approval of the apparatus if as a result it then ceases to comply with the
standards against which approval was granted.

APPROVED for connection to Telecommunication systems
specified in the instructions for use subject to the conditions
set out in them.

• Modem

• Loudspeaking

• Automatic call initiation

• Detection of Initial Proceed Indication

• Auto Answering

• Operation in the absence of proceed indication

• Auto Clear from the call originating end

• Storage of telephone numbers for retrieval by a predetermined code

• Multifrequency and Loop Disconnect signalling

When entering network addresses into the dialling directory, please ensure that the telephone numbers are
correct.

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Connection to Supply Mains

The wires in the mains lead supplied with this equipment are coloured in accordance with the following code:

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

• 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.

Important

Green and Yellow Earth
Blue Neutral
Brown Live

, or coloured green and yellow.

SAFETY WARNING

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 (T elephone 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.

This equipment must be earthed.

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