Looking For a 2 Way Audio Intercom Solution For a Shop Environment, To Accompany a PTZ Camera

Got a fabrication shop where the owner wants to be able to sit in his office and view activity and if necessary zoom in on a location where he can inspect work and also have a conversation with the worker.

Would be nice is the shop side had a speaker for announcements/paging etc. and worker could communicate hands free. We've installed NVR and are planning to add PTZ camera with VMS client software on his desk computer. Figured audio could be integrated, but two different systems are not a problem. Open to a speakerphone option if that makes sense. Just something easy for him to use and effective.

Thanks in advance.

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