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1. INTRODUCTION
INTRODUCTION
The Zetron Model 30 is a multi-mode, easy to use telephone interconnect.
Simplex VOX, simplex sampling, intelligent sampling, and half duplex modes
are supported. Digital voice delay is an available option to enhance simplex
operation.
Multi-digit DTMF access codes and toll restrict digits are selectable to eliminate
unauthorized use of the phone line. The Model 30 allows mobile DTMF or
regenerated pulse dialing. Repeat audio processing and transmitter control are
included to convert a duplex base station into a repeater, allowing dispatch
operation.
The Model 30 includes factory defaults for all programmable settings so that it
will function on any system straight out of the box, or may be customized easily
using a touch-tone telephone or DTMF equipped radio.
The Selcall option for the Model 30 allows the Worldpatch to offer both DTMF
and Two-Tone selective calling of mobile and portable radio users. This
capability can be used from the phone, or by radio users, to signal other radios in
the system. The mobile-to-mobile signaling is available in both half duplex and
simplex applications. This option can be installed at the factory, or in the field as
an upgrade kit. The programming in a Selcall unit is significantly different than
regular Model 30 programming, so the programming commands in Section 4
should be carefully reviewed even by technicians who have prior experience with
non-Selcall versions of the Model 30 Worldpatch.
FEATURES
• Simplex VOX, simplex sampling, simplex phone key control, intelligent
simplex, and half duplex modes
• Single phone line interface
• DTMF or regenerated dial pulse dialing
• Repeat audio and control for mobile to mobile calls
• Morse code station ID
• Programmable via DTMF telephone or DTMF radio
• Call progress and mobile ring-out tone generation
• Call limit and mobile activity timers
• First and second digit toll restriction
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