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Hej guys,

we got a very annoying problem with our our snom 710 and 765 (on 3CX v15, with firmware 8.9.3.38). We're using Plantronics Savi W710 with your EHS Advanced 2.0 (revision R2A) one these phones, but we're not able get the headsets working. When we click the button on the headset it picks up, but the microphone's not working and the headsetspeaker make "white noise". I attached a picture of the connections ... hope it helps.

The EHS is connected with the phone via 4pin_cable, as you can see. The Headset is connect to the EHS wit 3,5mm jack and Rj45- 8pin. This is the only wiring which is possible with the delivered cables.

We tried different combinations of headsets, phones and EHS ... none worked, always the same.

Greetings

Yves

it's a lil bit weird, but this wiring works as described in the snom wiki

http://wiki.snom.com/Accessories/EHS_Advanced#Connecting_to_snom7xx_and_D7xx_series

the needed 4p cable is delivered with the plantronics headset

SOLVED!