Endpoint Mananger Remote Reboot of Phones Unsuccessful

I am using FreePBX Distro 1.87.29.55-2 which runs Asterisk 1.8.7.1-1. I am using Cisco SPA508G phones. Overall the system runs perfectly.

One thing that is not working is remote reboot of phones from the Endpoint Manager. If I try to reboot one phone or all phones, nothing happens. Although I believe this feature did work at some point. Perhaps a distro upgrade or module upgrade broke it.

How do I start troubleshooting this issue?

Thanks.

Read the very bottom of the post

http://www.freepbx.org/forum/freepbx/general-help/provisioner-v3-issue-cisco-3xx-5xx-attendant-blf