I have tried to get the 7915 sidecar to work on a 7962 phone with no luck. I am running CUCM 7.1.3 and I upgraded the 7915 firmware to B016-1-0-3 and the phone is running SCCP42.8-5-2SR1S. On another issue I can't get the phone to upgrade to SCCP42.8-5-3S over the WAN but shouldn't the sidecar work with 8-5-2SR1S? I do have some phones at HQ using 8-5-3S on 7962 that upgraded no problem and plan to deploy after a week of running with no issues on my test phones. Am I facing a bug with the sidecar firmware?