Telematrix SP750 User Manual
Page 17

17
Line Voltage Switches
A voltage switch for each phone line is 
located on the bottom of the phone. 
The voltage options are 24 Volt, 48 
Volt, or OFF. This voltage switch is 
used to illuminate LED lamps on the 
top side of the phone. It must be in 
the correct voltage position to operate 
the LED lamps. The factory default is 
24 Volt. 
System Hold Feature Option Switch
A feature switch for different hold
functions is located on the bottom of 
the phone. The switch options are 
standard “LINE Hold” or programmable 
“System Hold”*. 
 
The standard “Line Hold” allows for 
normal hold function operation. The 
programmable “System Hold”* feature 
is used for optional PBX system 
operations. 
 
The switch default is set at the factory 
as standard “LINE Hold”. 
* Programming “System Hold” is an Administrator
function. To program System Hold, follow the
speed dial instructions in this manual. To store the
dialing pattern, press the HOLD key in place of the
memory location.
LOW VOLT MW
ON
OFF
LOW VOLT MW
ON
OFF
Low Voltage LED Switch
A low voltage LED switch is located on 
the bottom of the phone. The switch 
options are ON or OFF. The factory 
default is OFF. 
