I recently upgraded to FreePBX 2.10 and I am not sure whether this was true after I upgraded to the latest version of FreePBX, but I noticed that dial tones don't seem to consistently pass through. I can press 0, but multiple digit extensions don't seem to pass through properly. I can tell that my SIP trunk is passing the tones through because I can use a softphone and the dial tones pass through. I was told that I should look towards a upgrading the firmware of the phone, but I don't see newer firmware for either phone. Any suggestions?