EM91403A Overview
The EM91403 is a series of tone/pulse switchable dialers that is posed of T/P dialer and T/P dialer with 3 sets memories. The EM91403 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.