GAI-Tronics MRTI 2000 (No. PL1877A) Microprocessor Radio Telephone Interconnect Installation & Service Manual - Manual (Page 66)

PC Programming PL1877A Microprocessor Radio Telephone Interconnect
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Multi-Digit Access/Release
Multi-Digit Access
This feature provides a method of allowing certain privileged mobile users to override restrictions that
have been programmed into the PL1877A.
For example, the parameters may be set so that mobile users are not allowed to dial telephone numbers
with a first digit of 1. If a mobile user attempts to dial a number beginning with 1, the PL1877A
disconnects. However, with multi-digit access, certain privileged users may override this restriction and
dial numbers beginning with 1.
The Multi-Digit Access Code
A multi-digit access code is a 1 to 6-digit DTMF code that is used as a prefix to DTMF access
commands, which are *, #*, *n (autodial, where n is the autodial location) and ** (redial). The PL1877A
supports four unique multi-digit access codes, each of which may be 1 to 6 digits in length.
Each can be programmed to override a specified set of restrictions, such as dialing telephone numbers
beginning with 1.
N OTE : PL1877A only recognizes multi-digit access prefixes if the time between entry of individual
digits (including the access command *) is less than one second and the duration of each digit is not
greater than 3.5 seconds.
The table on page 61 lists the restrictions that can be overridden using a multi-digit access prefix.
Security Code
This code consists of the DTMF command *0# followed by a 1 to 6-digit suffix. When the PL1877A
receives the security code *0#n, where n is the security code suffix, it immediately overrides all
restrictions listed in the table below. The PL1877A continues to override these restrictions until the next
disconnection (i.e., when the PL1877A generates six beeps).
N OTE : The security code is not an access code. The PL1877A will not access the phone line in response
to this code; it will only override the restrictions.