This circuit is laid out on a large and partitioned PCB making it ideal as a training board or a class aid in understanding the building blocks which make up the telephone handset. The dialing mode may be set to pulse or DTMF to suit either the telephone system to which it may be connected or to demonstrate the older decadic dialing system.

Technical Specification

• Power Supply : Line Powered. (no additional power required)
• PCB Dimensions : 4.91" x 4.05" x 0.7" (12.47mm x 102.8mm7 x 15mm)

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