GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 86)

Parameter Modification PL1877A Microprocessor Radio Telephone Interconnect
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Procedure from Landline Telephone
Two telephone lines are required: one for the interconnect and a second line for the telephone that is used
to originate Touch-Code commands. After connecting the patch to the first telephone line, dial the
number assigned to the PL1877A from the telephone. Allow the PL1877A one full minute to answer the
line. At that time the PL1877A returns a short beep tone to the caller. After the beep tone is heard, you
must enter the sequence *#0. If a landline programming prefix has been programmed into parameters
145-150, you must precede *#0 with that prefix.
To check parameters without changing them, you should enter a *, followed by the parameter number
you wish to examine, then a second *. If you make a mistake while entering this number, you may cancel
the incorrect entry with a #, prior to the second *. At this time, the PL1877A should return to the caller
the corresponding DTMF code of the number that has been stored into that specific location. If an
invalid parameter has been attempted from the originating DTMF phone, the PL1877A returns “bad
beeps” (3 short, high-frequency tones).
To modify a parameter, enter the parameter number followed by a *. The patch returns “good” beeps
(three short, mid-frequency tones) if the parameter has been successfully opened. Enter the desired
parameter value. Once the parameters have been programmed as needed, exit the parameter modification
routine by entering a ## from the DTMF telephone. The PL1877A should then return to you a series of
six disconnect beeps, returning the PL1877A to an idle state.
Refer to the parameters section of this manual for specific parameter functions and the table at the end of
this section for a valid DTMF parameter modification list. This list informs you of what specific
parameters can be programmed via DTMF.
N OTE : If the PL1877A is configured for land-line selective signaling and you wish to allow land-line
DTMF programming, you must program the PL1877A to require a * access command from the land-line
caller (parameters 43, 50). Then, to program parameters via DTMF, dial *#0 (along with any required
prefix) instead of *. If you do not program the PL1877A to require a * access command, the PL1877A
interprets *#0 as paging input instead of a command to enter the land-line DTMF programming mode.