In X7, the diagnostics log (When in DEBUG mode) will output DNS lookup data, and similarly in X5 and X6, a 'netlog 2' will also have this, so if any of these logs are running when you are attempting to place a call, you should be able to read out some useful information about the DNS lookup and call setup in general.
How is your DNS zone configured? Have you made sure that 'Include address record' is set to 'No' for the DNS zone?
For calls to which domain are you seeing DNS lookup failures? Have you manually verified that SIP and/or H323 SRV records have been set up for this domain?
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
Over the last few months, I have had the privilege of working on SI...
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...