Hardware manual

Electra Elite Issue 8
System Hardware Manual 7 - 19
3.4.2 Switch Settings
The APR-U Unit has two switches.
Refer to Table 7-4 APR-U Unit Switch Settings for SW1
and SW3.
Figure 7-23 APR-U Unit Switches
Table 7-4 APR-U Unit Switch Settings for SW1 and SW3
Switch Description
SW1–1 Do not use
SW1–2
A Single Line Telephone and Multiline
Terminal are used alternately.
(The Multiline Terminal and the APR-U Unit
share the same B1 channel.)
SW3–1
Sets impedance to 600 for devices such as
modems or facsimile machines.
SW3–2
Used for complex impedance devices such as
Single Line Telephones.