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2.3.1. To Set Connections/Configuration
a. Press MENU. The display will read “Phone Setting.”
b. Press the soft key under ENTER.
c. Press the DOWN ARROW repeatedly until the display reads ”Line Type.”
d. Press the soft key under ENTER. The display will show the current line setting for Line 2.
e. Press the soft key under CHANGE repeatedly, until the desired line connection setting for Line
2 is displayed. The choices are:
i. L2: COMMON (factory setting)
ii. L2: PRIVATE
iii. L2: UNCONNECTED
f. Press the soft key under NEXT to see the current setting for Line 3, and repeat steps c, d, and e
to change the settings for Lines 3-4.
g. Press MENU to exit.
2.4. Loop Voltage Detector
Your 2750 telephone will light up its line status indicators when a telephone such as a fax machine,
modem, or standard telephone is using a line. If the line status indicators of your 2750 telephone do not
function properly, either failing to light up when a standard telephone uses a line, or staying lit even
though no telephone is using a line, the loop voltage detector setting needs to be adjusted. The factory
setting of 48 volts is appropriate for most installations. If this is not suitable, try setting your phone to
24 volts. If that does not work, then set it to 12 volts. You can also turn this feature OFF.
2.4.1. To Set Loop Voltage Detector
a. Press MENU.
b. Press DOWN ARROW repeatedly until “Advanced Setting” appears in the display.
c. Press the soft key under ENTER.
d. Press DOWN ARROW repeatedly until “Loop Detect:” appears in the display, along with the
current setting
e. Press the soft key under CHANGE repeatedly until the desired loop detect setting is displayed.
The choices are:
i. Loop Detect: 48V (factory setting)
ii. Loop Detect: 24V (24 volts)
I ii. Loop Detect: 12V
iv. Loop Detect: OFF
f. Press MENU to exit.
If a line indicator at your 2750 telephone stays lit because there is no telephone line connected, and you
wish to turn it off, do not use this feature, but set this line at this station to UNCONNECTED
11 2750 User Guide Version 1.3