If you are planning a full deployment of VoIP, in addition to verifying the equipment and software list, Id recommend doing end-to-end testing ... even if you control the entire network.
Agilent has a 'VoIP Quality Tester" that will give a full analysis of the endpoints. Buy one or rent one (or get a consultant that has one) .. having the right hardware/software is only the starting point; optimizing the overall network is probably going to be necessary ... lots of tweaking configs, routes, and loads.
I'd also recommend some serious prototype and piloting.
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...