Hi Mike, I would try the following: * If you can login through HTTP, check the uptime of the Cisco device. Make sure the device is not rebooting. * If you can, make a 'ping' from the PBX to the device and annotate milli-seconds of response. Then compare then to the default 'qualify' sip setting for the Cisco peer (width sip show peer _SPA112_PEER_NAME_). Maybe you can set 'qualify=X' where 'X' is the measured round-trip time to a peer. * If the Cisco is behind a NAT device/router, maybe the default 60 seconds for the 'qualifyfreq=60' sip setting is not enough to keep active the session. Try changing this value to something lower like 15 or 30 seconds. Cheers -- GnuPG Key ID: 0x39BCA9D8 https://www.github.com/mefhigoseth ...:::[ God Rulz ! ]:::... -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20160620/2483c3be/attachment.html>