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33980-A2-GZ41-20 June 1998
CAUTION
Users should not attempt to
make such connections
themselves, but should
contact the appropriate
electric inspection authority,
or electrician, as appropriate.
The Load Number for this equipment is on the label on
the modem. The Load Number (LN) assigned to each
terminal device denotes the percentage of the total load to
be connected to a telephone loop which is used by the
device to prevent overloading. The termination on a loop
may consist of any combination of devices subject only to
the requirement that the total of the Load Numbers of all
devices does not exceed 100.
United Kingdom
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 four. This value includes any
BT-provided instrument which may be assumed to have a
REN of 1 unless marked otherwise. The REN of this
modem is 1.
Connection to Leased Lines
If any other apparatus, including cable or wiring, is
connected between the apparatus and the point of
connection to any speechband circuit, then all that other
apparatus shall comply with the following:
1. The overall transmission characteristics of all that
other apparatus shall be such as to introduce no
material effect upon the electrical conditions
presented to one another by the apparatus and the
speechband circuit; and
2. All that other apparatus shall comprise only:
(i) apparatus approved for the purpose of
connection between the apparatus and a
speechband circuit; and
(ii) cable or wiring complying with a code of
practice for the installation of equipment covered
by this part of BS 6328 or such other requirements
as may be applicable.
This modem is suitable for connection to BT circuits
with signalling at a nominal frequency of 2280 Hz and
may be connected to multipoint or point-to-point circuits.
The apparatus does not require signalling or otherwise use
the frequency range 0–200 Hz.
No d.c. interaction is intended between the modem and
the telephone network.
This apparatus may be directly connected to a
speechband circuit or connected to a relevant branch
system for speechband circuits.
All European Countries
Safety Notice
Interconnection circuits between this modem and any
other equipment should be such that the equipment
continues to comply with the requirements of EN41003
for TNV (Telephone Network Voltage) circuits and
EN60950 for SELV (Safety Extra Low Voltage) circuits
after making connection between circuits.
Japan
Notices
This equipment is classified in the 1st Class
category. When used in a residential area or
in an adjacent area thereto, radio
interference may be caused to radios and
TV receivers, etc. VCCI-1
Restrictions
Due to JATE (Japan Approvals Institute for
Telecommunications Equipment) regulations, only three
attempts to dial a number are permitted in a 3-minute
period. If a fourth attempt is made to dial the same
number, the modem returns the ERROR return code. This
restriction applies to the number dialed from the