Fax Mate Circuit

The fax mate separates the fax machine from the phone line, rings the fax machine on command, connects equipment to incoming lines, and senses the end of the message. When a touch tone pound signal (#) is detected, it actuates a ring generator and driver for the fax machine (the # signal is not used in ordinary dialing). The connect signal is inhibited during this time (ring cycle). IC46 operates for 15 seconds and drives part of the connect IC. When the fax or modem has powered up, it sends out a handshake tone. IC6 connects the equipment for initial hookup and maintains power to the connect section. When the fax machine hangs up, the loop current detector turns off and resets the system.

The fax mate circuit serves as a critical interface between the fax machine and the telephone line, ensuring proper communication and functionality. The operation begins with the separation of the fax machine from the phone line, allowing the fax mate to manage incoming calls without interference. The circuit includes a ring generator that activates the fax machine upon receiving a specific command, indicated by the touch tone pound signal (#). This signal is unique as it does not interfere with standard dialing, thus preventing any disruption to regular phone operations.

The inhibition of the connect signal during the ring cycle is essential for avoiding conflicts in communication. IC46 plays a pivotal role in this process, functioning for a duration of 15 seconds to control the connection status. This integrated circuit also facilitates the transition to the handshake tone, which is emitted by the fax machine or modem once it is powered on, indicating readiness to send or receive data.

IC6 is another crucial component of the circuit, responsible for establishing the initial connection and ensuring that the connect section remains powered throughout the operation. This stability is vital for maintaining communication integrity. Once the fax machine completes its operation and hangs up, the loop current detector is activated, which then turns off the system and resets it to prepare for the next incoming communication.

Overall, the design of the fax mate circuit emphasizes reliability and efficiency, ensuring that fax communications are handled seamlessly while minimizing the potential for interference with standard telephone operations. The fax mate separates the fax machine from the phorie line, rings the fax machine on command, connects equipment to incoming lines, and senses the end of the message. When a touch tone pound signal (#) is detected, it actuates a ring greater and driver for the fax macliirie (the # signal is not used in ordinary dialing).

The connect signal is inhibited for this time (ring cycle). 1C46 runs for 15 s and drives part of the connect IC. Then the fax or modem has fired up and is sending out a handshake tone. IC6 connects the equipment for initial hookup and keeps the connect section powered. When the fax machine hangs up, the loop current detector turns off, and resets the system.