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8.
Ringer Equivalence Number (REN) = 3
The REN is a customer guide indicating approximately the maximum number of items of apparatus that
should be connected simultaneously to the line.
The sum of the REN's of the individual items should not exceed 4. The REN value of a B1 telephone is
assumed to be 1 unless otherwise marked.
Only one telephone and the facsimile machine should be connected to the line. Where the telephone is
a separate unit it must only be connected to the appropriate socket on the facsimile apparatus.
9.
THE VOLTAGE DROP INTRODUCED BY THE APPARATUS BETWEEN THE PSTN AND THE
ASSOCIATED TELEPHONE AT A CURRENT OF 40mA dc IS 0,4 Volts.
10. FOR THE DEFINITION OF A "RELEVANT BRANCH SYSTEM" OR "RBS", REFER TO BS 6789
SECTION 6.1 CLAUSE 2.4
11. THE LJU SERIES CONNECTOR IS FOR USE WITH AN APPROVED SIMPLE TELEPHONE ONLY.
THIS PORT IS A TNV CIRCUIT AND IS INTENDED FOR CONNECTION TO THE TELEPHONE
NETWORK ONLY.
APPLICATION FOR INSTALLATION OF B.T. SOCKETS
This form may only be required if the wiring is owned by B.T.
If you require suitable sockets for connection of this apparatus complete this form and send it to
your local British Telecom sales office, at the address listed in your telephone book.
To: BRITISH TELECOM
I require .................. sockets for connection of the following equipment
Title
Model
Approval No.
Name
......................................................................................................................................
Address ......................................................................................................................................
......................................................................................................................................
Telephone number
Date
............................
notice.p65
FACSIMILE MACHINE
OFX 2100
NS/1258/3/P/603987
...................................................................................................................
Signed
2
...................................................................
13/04/00, 23.14
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