8
8.
Installation
The telephone must be sited close to one of the new modular telephone sockets.There
is no limit to the number of sockets you can have installed in your home which means
you can, if you wish, move your telephone from room to room. Unlike sockets, however,
there is a limit to the number of telephones you can operate on your exchange line.
Installing too many telephones will overload the line which could inhibit some or all of
the telephones from ringing.To avoid overloading your exchange line there is a method
of calculating the number of telephones you can use.Add all the Ringer Equivalence
Numbers (REN) together, which are marked on the base of each telephone.Numbers
differ so do check.The numbers when added together must be 4 or less. Sometimes
BT telephones are unmarked but they can generally be assumed to have a REN of
1.0. If in doubt, please check with your BT Sales Office.The REN value of your a300
Headsetphone is 1.0.
9.
Setting the Dialling and Recall Mode
The settings must be carried out BEFORE connecting the telephone to the telephone
socket. please note that batteries are not supplied with the unit.
Remove the battery compartment cover on the underside of the base by removing the
screw and sliding back the cover. N.B.The telephone must be disconnected from the line
before removing the battery cover. Fit 2 size M (or equivalent) leakproof alkaline batteries
observing correct polarities.The batteries support information in the memories.
Note: If the Auto Redial function does not operate, you need to replace the batteries.
Two preset switches will be found situated underneath the memory card inlay.These are
the DIAL MODE SELECTOR SWITCH and RECALL MODE SELECTOR SWITCH and
should be set as follows:
9.1
THE DIAl MODE SElECTOR SwITCH
BT are replacing all local exchanges with new ‘TONE’ dialling digital systems.They will
give improved clarity and reliability and with ‘Touch Tone’ signalling telephones, instant
connection of calls over digital exchanges and a host of advanced features. However
some telephone exchanges in the U.K. still operate on the pULSE dialling system.
Your a300 Headsetphone series telephone allows you to operate on either system
and the DIAL MODE SELECTOR SWITCH should be set to the dialling mode required
by your exchange. Set the switch to the pULSE position for pulse dialling or to the
TONE position for tone dialling. If in doubt about the correct dialling mode used by your
exchange, please consult your Network Operator.