TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR AND DUAL-TONE MELODY GENERATOR EM91420 SERIES EM91420 SERIES GENERAL DESCRIPTION The EM91420 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 20-set memories.
The EM91420 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions.
The lock function is designed to inhibit toll dialing operation.
Beside this, melody generator, ring detector and SDO (Serial Data Output) functions are provided in adva...

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