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Monday, 25 September 2017
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Block Diagram Of Telephone Set Telephone Set Component - DTMF circuit and keypad DTMF (Dual Tone Multi Frequency) as the n... -
TELEPHONE SET COMPONENT •DTMF circuit and keypad • tone ringer circuit • microprocessor unit (MPU) • speech network • line voltage r... -
Main Distribution Frame ( MDF ) • The Main Distribution Frame is situated at the telephone exchange. • It used to connect the ...
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