BT 2+8, Руководство по установке и обслуживанию

Страница: 22 / 40

Installation procedures
The approximate locations of the option links are shown in Figure 2.4
and 2.6.
Note
If information on the line voltages is required then the Network Supplier
or Host Switch Maintainer should be consulted.
Figure 2. 6
Setting the line voltage feed links
9LK24V
0 (LINE1)
0
IOI
L.. ...I
10 LK 24V
�Q
-
o o
24V
50V
24/50V Line feed option link
shown set to 50volt
Move to dotted outline for
24 volt setting
2.1.1s
Answering machines with Systemphones
The series method of connecting telephones to answering machines,
such as the BT Kingfisher and Wren, does not allow the continuation of
all five wires from the extension socket to a 2+8 Systemphone. This
means that the power feed and data information from the CCU to the
System phone are not possible, resulting in the loss of the LED line,
extension status and the loudspeaking operation. This can be overcome
by using a Line Jack Unit 10/3A, commonly referred to as a doubler, and
the connection arrangement shown in Figure 2.7.
Note Other types of ancillary equipment, such as fax machines, may also
require this method of connection.
2-13 TPU 1371Issue3(4/91)