GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 33)

PL1877A Microprocessor Radio Telephone Interconnect PC Programming
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Installation – Telephone Line Settings
Talk Battery Voltage
Select the talk battery voltage as 48 V or 24 V, depending on what is supplied by the local phone system
or PABX, as applicable. It will determine the off-hook threshold of the interconnect. Select Manual Set
to allow the user to specify the off-hook voltage threshold via the IAPS or Diagnostic Test 6 in the
PL1877A.
See Also: Off Hook Threshold.