I have a few Polycom Soundpoint 501's that still are functional (about 15 or so in the back) and would like to use them I have provisioned them using Option 66 with my internal provisioning link (which by the way is not where the current DOC [http://www.3cx.com/sip-phones/dhcp-option-66/] lists it, might want to update that documentation, so far as I can find, it only lists the external prov link on the startpage..) So far so good, phone I have added can call other extensions and can call out etc. I see the phone is not officially supported, but a provisioning file exists already called Polycom SPIP (3.1.X) so I figured all would be well. One pretty major issue, no button tone sounds whatsoever, no dialtone, no ringing while dialing. The only real thing I am concerned about is the button tones, you can't make any selections if you hit an IVR if you can't tone. I am certainly not a pro at this level of config for phones, can anyone point me in the right direction to what I can/should change or have a working provisioning file I can edit? The actual version of the phone is 3.1.3 I attempted to upload what I see in the default prov file, but it was blocked as a 'possible attack vector', hahah.