TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR AND DUAL-TONE MELODY GENERATOR EM91440 SERIES EM91440 SERIES GENERAL DESCRIPTION The EM91440 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 40-set memories.
The EM91440 series provide 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 advan...

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