EPABX Trainer - Z80 Microprocessor based stored program control. 64KB Program memory (EPROM), 32KB Data RAM for buffer. Two DOT Lines, Four Extension Lines with Opto Isolation . Dial Tone, Busy Tone, Ring Back Tone, Hold-on music and other Tone Generation. Power Requirement is +11V, +23V, +5V, +15V.
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