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This signal is output on Pin 8. blackbox.com When functioning as a fax, the Modem 3600 is fully ITU Group III compatible. It conforms to the EIA-578 standard interface between a fax modem and a computer with fax software.
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At Black Box, we guarantee the best value and the best support. You can even consult our Technical Support Experts before you buy if you need help selecting just the right component for your application.