Command select configuration, Aux2 input configuration, Low-power mode configuration – GAI-Tronics 227-005 SMART Auto-Dial Handset Telephones User Manual
Page 22: Hardware settings

Pub. 42004-443C
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Command Select Configuration
Factory Setting: Auto
Jumper J20 is required to be in the factory set position. Do not remove the jumper from the PCBA.
AUX2 Input Configuration
Factory Setting: AUX2
Jumper J12 selects an option to use the AUX2 input (TB7) for the cradle hookswitch connection. This
alternate hookswitch wiring to AUX2 would be used in place of the normal hookswitch connection to
clips E3–E4. This is convenient if the 69577 PCBA is used to replace a 69411 PCBA in a 2xx-003
SMART Telephone, or any custom SMART Handset Telephone.
Hookswitch connects to clips E3–E4: J12 in position AUX2.
Hookswitch connects to AUX2: J12 in position HKSW.
Low-Power Mode Configuration
Factory Setting: Low-Power Mode Disabled
For some installations in which only minimal loop current is available, the performance of the telephone
may be improved by enabling this feature. Symptoms of minimal loop current may include low speaker
volume and/or momentary muting of audio. In the majority of applications, however, the low-power
mode should be disabled. The low-power mode is enabled by installing the following three jumpers: J21,
J22, and J23.
Low-Power Mode Enabled: Jumpers installed at J21, J22, and J23.
Low-Power Mode Disabled: Jumpers NOT installed at J21, J22, and J23.
Hardware Settings
Table 1. Hardware Settings Table
Default Settings
User Settings
Function Setting
Jumper/Position
Setting
Jumper/Position
Auto-answer Enabled
J14/EN
Password Protection
Enabled
J9/EN
Not Applicable
Line Polarity
Non-polarized
J6/NON
Command Select
Auto
J20/AUTO
Not Applicable
DTMF Gain Select
Low Gain
J17/LO
AUX2 input is
available for other
functions
(Hookswitch wires to
clips E3-E4)
AUX2 J12/AUX2
Low-Power Mode
Disabled
J21, J22, J23 not
installed
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