UK Statutory Requirements
UK Statutory Requirements - Page
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SPOT 14.4
SPOT 14.4 User's Guide
User's Guide
38GDE00001SCF - Issue 4 (11/96)
38GDE00001SCF - Issue 4 (11/96)
Dialling modes
Dialling modes
BS6789 Section 3.1 defines three modes: Mode 1, Mode 2 and Mode 3.
– Mode 3 covers devices which auto dial the BT emergency service
(999 or 112) and then play a recorded message e.g. burglar/fire
alarms.
– Mode 2 covers devices which auto dial other numbers (not 999 or
112) and play a recorded message.
– Mode 1, the mode provided by the modem, may be used for all
non-emergency (non-999) calls. Mode 1 specifies that the devices
must drop the line within one minute if it receives the standard British
Telecom tones for Number Unobtainable, Busy , Equipment Engaged,
Ring or Special Information.
Calls not covered by Modes 1, 2 or 3 must not be made. Since the SPOT
uses Mode 1, when used as a modem or fax it must not be used to make
emergency (999 or 112) calls. The SPOT handset may be used to make
emergency calls (999 or 112) even when SPOT has no external power.
Ringer Equivalence Number (REN)
Ringer Equivalence Number (REN)
REN is a customer guide, its main purpose being to indicate the
maximum number of apparatus that should be connected to a single
telephone line without seriously affecting the bell (or tone) ringing
characteristics of the items connected.
The REN value of this equipment is 1.5. To calculate the maximum
number of items (usually telephones) that can be connected to a single
exclusive telephone line, simply add up the REN values and the sum
should be 4 (four) or less. The British Telecom supplied telephone is
assumed to have a REN of 1 (one) unless otherwise marked and all other
equipment should be clearly marked with an appropriate REN value.
Because of the ringing detector characteristics a guarantee of successful
operation in an installation of mixed types of ringing detector may not he
given by the supplier.