8
8.
Installation
your a200 Telephone is designed to be plugged into the new phone sockets adopted
in the u.k. If you do not have a primary socket you can obtain this from your bT sales
office, whose address is in the telephone directory. Additional sockets can be fitted by
yourself using one of the extension kits commercially available. For additional sockets
required on a pbx you should contact your pbx supplier/maintainer. The plug and
socket are designed so that the plug will only fit the socket the correct way round.
please note any other method of connection will invalidate the instrument approval.
On any exchange line you may have as many sockets as you like, the number of which
may exceed the number of telephones. your telephone can be moved from socket to
socket by simply plugging it in where you wish. However, if you unplug your telephone
whilst involved in initiating a call or talking, the call may be lost.
There is a limit on how many telephones may be connected to an exchange line at any
one time. plugging in too many telephones will overload your exchange line and as a
result your telephones may not ring. To enable you to check if you are overloading a line,
a Ringer Equivalence number (REn) is marked on the base of the telephones you wish
to plug in. The ringers should operate satisfactorily if the sum of the REn numbers are 4
or less.Include all bT equipment provided. If a bT telephone is supplied unmarked you
can assume it to have a REN of 1, but this should be confirmed by your local BT sales
office.
NOTE:
nOT ALL TELEpHOnES HAvE THE SAME REn vALuE.
This a200 Telephone has a REn of 1.
Once you have completed the “Initial Set-up procedure” ( Section 4) then plug your
telephone into the socket. Once plugged in wait for 4 seconds before making or
answering a call.
your a200 Telephone is now ready for use.
9.
Setting the Dialling and Recall Mode
9.1
THE DIAl MODE SElECTOR SwITCH
Many telephone exchanges in the uk still use the puLSE dialling system. However, as
new exchanges are commissioned and older exchanges are updated, the dialling system
is being changed to TOnE dialling which gives faster connection as well as access to
new services.
your a200 Telephone allows you to operate on either system and the DIAL MODE
SELECTOR SWITCH should be set to the dialling mode required by your exchanges. Set
the switch to the puLSE (Loop Disconnect) position for puLSE dialling, or to the TOnE
(Multi Frequency) position for TOnE dialling. If in doubt about the correct dialling mode
used by your exchange, please consult your network Operator.