INTRODUCTION 1 - 13
Using extension telephones (For U.K. only)It may be that your premises ar e already wired with par allel extension
telephones, or you intend to add extension telephones to your line,
in addition to your machin e. While the simplest arrangeme nt is
straightforward paralle l connection, there are some reas ons as to
why this arrangement will cause unsatisfactory service, the most
obvious of which is inadve rtent interruption of a facsimil e
transmission by someone p icking up an extensi on telephone in or der
to make an outgoing call. Addi tionally, fax receive may not op erate
reliably in such a simple configuration.
This machine may also be set to make a dela yed transmission (i. e. a
transmission at a pre-set time). This pre-set job may coincide with
someone picking up an extensio n handset.
Such problems can easily be el iminated however, if you arrange
modification of your extension wiring circuit, such that extension
devices are connected “downs tream” of your machine, in a
master/slave configuration. In such a configuration, this machine can
always detect whether a telephone is in use, thus it will not attempt
to seize the line during that time. This is known as “telephone
off-hook detection.”