MCU Timeout Issue

[Nemo]

Cisco TelePresence MCU 4520 build 6.18(3.42) version 4.4(3.42) is dropping some but not all endpoints at exactly 8min 23sec (see attached screenshot). We are currently migrating to a SIP environment but there is no specific pattern to the call drops. This has happened on MX series, Spark series. Anyone had any similar issues to this?

[ahmed]

Hi,

try to clear logs record on MCU, or upgrade to the latets firmware.

[Wayne DeNardi]

Are there any firewalls between your MCU and your endpoints?  With things disconnecting after a seemingly consistent time period, this reeks of a firewall timeout issue.