The 7911G does not have a built in amplifier like the 7940/7960 series.So if you are going for something like the H251 (corded) headset you will need the M12 Amplifier. If you are going for something like the CS351N (Cordless) headset, you will be good to go. Have a look at the Plantronics compatability, I used the 7912 to search because the 7911 is not yet listed;
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...