Multitech MULTIMODEM MT5600ZDX Owner's Manual page 90

MT5600ZDX Owner's Manual
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.
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.
The approval of this modem for connection to the British Telecom
public switched telephone network is INVALIDATED if the apparatus is
subject to any modification in any material way not authorized by
BABT or if it is used with or connected to:
i. internal software that has not been formally accepted BABT.
ii. external control software or external control apparatus which
cause the operation of the modem associated call set-up
equipment to contravene the requirements of the standard set out
in BABT/SITS/82/005S/D.
All other apparatus connected to this modem and thereby connected
directly or indirectly to the British Telecom public switched telephone
network must be approved apparatus as defined in Section 22 of the
British Telecommunications Act 1984.
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REN = 1