Konica Minolta bizhub 20 bizhub 20 User Guide - Page 60

Connecting an external or extension telephone, Using extension telephones U.K.

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Telephone and external devices Connecting an external or extension telephone 7 You can connect a separate telephone directly to your machine as shown in the diagram below. 1 2 1 Extension telephone 2 External telephone When you are using the external telephone, the LCD shows Telephone. Using extension telephones (U.K. only) 7 Your premises may already be wired with parallel extension telephones (those connected to sockets in other rooms in the building), or perhaps you intend to add extension telephones to your line. While the simplest arrangement is a parallel connection, there are some reasons why this arrangement may cause problems. The most common problem, is someone picking up an extension telephone while the machine is trying to send a fax. Such problems can easily be eliminated, if you arrange modification of your extension wiring circuit, such that extension devices are connected "downstream" of your machine, in a master/slave configuration (see figure 2). In such a configuration, this machine can always detect whether a telephone is in use, so it will not attempt to seize the line during that time. This is known as "telephone offhook detection". The inadvisable configuration is shown in figure 1, and the recommended master/slave configuration is shown in figure 2. This new connection configuration can be arranged by contacting BT, Kingston upon Hull Telecommunications, your PBX maintainer or a qualified telephone installation company as appropriate. Simply explained, the extension telephone circuit should be terminated on a normal modular plug (BT 431A style), which in turn should be inserted into the modular socket of the white "T"-shaped connector provided as part of the line cord assembly. Figure 1: 1 1 7 2 3 FAX 7 1 Extension socket 2 Master socket 3 Incoming line Figure 2: Recommended connection of extension sockets 7 1 1 2 3 FAX 1 Extension socket 2 Master socket 3 Incoming line These phones are now connected as external devices as shown on page 51, because they are connected to the fax machine via the Tconnector. 51

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Telephone and external devices
51
7
Connecting an external or
extension telephone
7
You can connect a separate telephone
directly to your machine as shown in the
diagram below.
1
Extension telephone
2
External telephone
When you are using the external telephone,
the LCD shows
Telephone
.
Using extension telephones (U.K.
only)
7
Your premises may already be wired with
parallel extension telephones (those
connected to sockets in other rooms in the
building), or perhaps you intend to add
extension telephones to your line. While the
simplest arrangement is a parallel
connection, there are some reasons why this
arrangement may cause problems.
The most common problem, is someone
picking up an extension telephone while the
machine is trying to send a fax.
Such problems can easily be eliminated, if
you arrange modification of your extension
wiring circuit, such that extension devices are
connected “downstream” of your machine, in
a master/slave configuration (see
figure 2
). In
such a configuration, this machine can
always detect whether a telephone is in use,
so it will not attempt to seize the line during
that time. This is known as “telephone off-
hook detection”.
The inadvisable configuration is shown in
figure 1, and the recommended master/slave
configuration is shown in
figure 2
.
This new connection configuration can be
arranged by contacting BT, Kingston upon
Hull Telecommunications, your PBX
maintainer or a qualified telephone
installation company as appropriate. Simply
explained, the extension telephone circuit
should be terminated on a normal modular
plug (BT 431A style), which in turn should be
inserted into the modular socket of the white
“T”-shaped connector provided as part of the
line cord assembly.
Figure 1:
7
1
Extension socket
2
Master socket
3
Incoming line
Figure 2: Recommended connection of
extension sockets
7
1
Extension socket
2
Master socket
3
Incoming line
These phones are now connected as
external
devices
as shown on page 51, because they
are connected to the fax machine via the T-
connector.
1
2
FAX
1
2
3
1
FAX
1
2
3
1