Hi,
I upgraded our Quadro 4x to the latest firmware version 5.2.9 ... since then I have been random reports of issues retrieving a FXO call from hold or call park status, but only on the extension the FXO call is forwarded to.
I tested this out today and I can get the issue to repeat itself 100%
When I call in via FXO landline, and the call is forwarded directly to a Snom 300 or Snom 370 extension, i.e. by going to FXO settings and selecting the drop down box as the extension, after the call is placed on hold - when I go to retrieve it it will either hang up the caller or play a very loud hash noise down the phone line.
I have managed to find a workaround for this problem - I set the FXO settings to forward to a virtual extension, which forwards the call unconditionally to the Snom extension again - and call hold etc works perfectly.
This only started happening after the firmware update.... and I have tried updating the firmware on the Snom phones to Version 8 with no difference.
Since I have now found a workaround I'm not too worried about it but thought it could definitely warrant someone looking into it
Thanks