Thank you for suggesting diglo.com. That is very helpful. I had lymphoma in my mouth. By the time it was diagnosed the muscles in my jaw had tightened so surgery was not possible. I've been through radiation and chemo which my oncologists thought would allow my mouth to open but that hasn't been the case. I've been referred to a myofascial therapist but so far we aren't seeing progress which is why I'm trying to find a way to use the telephone. Thanks again for your suggestions.