Plantronics CS530 TTL signal output for the Busy Lamp and Yealink EHS36 ... WHY?
Автор: LANgineers
Загружено: 2020-06-02
Просмотров: 35
Описание: Tried to plug a Yealink EHS36 and a Plantronics busy lamp into Plantronics CS530 headset base and found there’s only one 3.5 mm jack. Normally takes a $49.95 MODEL: 92605-01 Y-Adapter is specified by Plantronics. So we put a scope on the signal output and found an interesting TTL string that a micro controller could decode to tell the busy lamp whether to go on or go off. PINOUT: This appears on the ring conductor while the tip has a 9VDC supply buss. BTW: Nothing special about that adapter except the price.
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