GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 98)

Parameter Modification PL1877A Microprocessor Radio Telephone Interconnect
12/10 92
Triple Key Access
The PL1877A can be programmed to allow answering of land-line/attendant calls by mobiles that are not
equipped with DTMF decoders. If enabled by parameter 20, the PL1877A interprets three carrier bursts
over a 3-second interval as an attempt to answer ring or selective signaling. The PL1877A responds just
as if it had received the * access command.
N
OTE : This feature requires that the PL1877A be programmed for external logic or internal squelch
carrier detection. It is incompatible with RX VOX carrier detection.
Parameter Function
20 Disable triple key access feature = 0
Enable triple key access feature = 1
Default = 0
Manual Release Methods
Mobile Originated Release
Mobile Release Command
Parameter Function
12 Normal release command is # = 0
Normal release command is ## = 1
Default = 0
Multi-digit Mobile Release
Parameter Function
40 Multi-digit release codes are suffixes to release commands = 0
Multi-digit release codes are prefixes to release commands = 1
Default = 0
General Multi-digit Release Code
410–415
The valid range for parameters 410–415 is 0–9, A–D, FF. Unused digits must be filled
with FF (hexadecimal FF). If all digits are filled with FF, the corresponding code is
disable.
General multi-digit release code.
Specific Multi-digit Release Code
The valid range for parameters 386-409 is 0-9, A-D, FF. Unused digits must be filled
with FF (hexadecimal FF). If all digits are filled with FF, the corresponding code is
disable.
386–391 Multi-digit release code corresponding to multi-digit access prefix #1.
392–397 Multi-digit release code corresponding to multi-digit access prefix #2.
398–403 Multi-digit release code corresponding to multi-digit access prefix #3.
404–409 Multi-digit release code corresponding to multi-digit access prefix #4.