We have a site which has just begun experiencing a one-way media path issue. It's an IPO 406 at version 4.0.10 Rebooting the IPO clears up the problem for a few hours, or possibly a day. H323 call setup and alerting works fine, in both directions. This site is in an 8 site MPLS network, and has worked well on the network for years. It has 30 VCMs, which are working. What filter(s)would I enable in Sysmonitor "system\development tracing" to log this issue? Thanks for any suggestions.