We are looking for a contact closure device that will work with a Polycom VVX410 so that our dispatchers can utilize a headset with our radio system as well as the phone system. For this to work, we are told that we need an off-hook sense (contact closure) so that the phone can inform the device of when it is off-hook. This was obviously a part of older phones, but does anyone know if an external device is available that works with these VOIP Polycom VVX410 phones? Thank you very much!
PS, I am attaching a diagram of what we are trying to accomplish. Thanks!
Aaron