We have had several multipoint meetings recently where a user will try to dial their scheduled meeting, however they will get an "insufficient resources" error. They may then try again and be able to dial in OK. Note that this only happens sometimes, usually people are able to dial in OK.
Checking the CTMS system errors will show "There is not sufficient resources. Availible segments: 0" even though there are only around 25 - 30 of the availble 48 segments being used (usually 4 -5 CTS-3000s and 1 - 2 CTS-1000s, all with presentation codecs) and all 48 segments are allocated to scheduled meetings on CTMS.
We are running CTMS 1.60
If we have segments available as you stated take a look at:
CSCtf55004 scheduled MP meeting gets rejected due to inaccurate resource calculation
Will be fixed in 1.6.4 available in the next 2 weeks I think
1. Migrate some of the meetings to other CTMS if there are multiple schedulable CTMS servers.
2. Reduce the number of segments if meetings can’t be migrated.