Specifications

Appendix D - Regulatory Information
61
European Low Voltage Directive
When correctly installed and maintained, the modem will present no
hazard to the user. When correctly installed the modem will be
connected to the PSTN or a PW and to a Data Terminal Equipment
(DTE), whose modem connections comply with CCITT
recommendation V28. The DTE connections are therefore taken to
be safe voltages (less than ± 30 volts).
Ports which are capable of connecting to other apparatus are
defined as SELV. To ensure conformity with EN41003, ensure that
these ports are only connected to ports of the same type on other
apparatus.
Compliance with BS6305 Clause 6.2, BS6320 Clause
7.2, and BABT/SITS/82/005S/D
a. The modem is suitable for connection to the Public Switched
Telephone Network (PSTN) provided by British
Telecommunications plc or Kingston Communications (Hull) plc.
Circuit supply by British Communications, Mercury
Communication, or Hull City Council. Only direct exchange lines
may be used, not shared service.
b. The modem is suitable for household, office, and similar general
indoor use. It is not suitable for use as an extension to a
payphone.
c. BT lines supplied must support either loop disconnect or
multifrequency tone signalling.
d. REN (Ringer Equivalence Number).
The REN value of a unit is calculated from 3/n where n is the
total number of units which can be connected in parallel which
will still cause the standard bell (as defined in BS6305 Appendix
D) to ring.
REN values of less than 0.3 cannot be assigned.
REN = 1
If a telephone or other device is connected in parallel with the
modem, the combined REN must not exceed 4. A BT supplied
telephone may be assumed to have REN of 1.0 unless
otherwise noted.