Hi,
Does anyone know the pinout, voltages, and behaviour of the 700 series EHS port?
From the various photos on the accessories tab on the product page (Plantronics | Savi 700 Series ) the connector seems to be a standard 3.5mm stereo jack. This being the case, what I'm interested in is the output voltage and nature of the signal across the two non-ground rings.
I'm hoping to be able to interface a standard consumer-level accessibility telephone (http://www.telstra.com.au/help/download/document/telstra-sp817-290409.pdf?red=/help/docs/telstra-sp817-290409.pdf (PDF)) to a w740 via the EHS jack.
Are the signals momentary, or do they remain high for the duration the line is off-hook?
Cheers,
James.
