I have a 30 person network. 3 locations about 10 per location.
I wanted to migrate to VoIP from pots. I was thinking about getting a uc540 or 520 for each location and what ever the phones are that I would need.
Would I be able to transfer calls to the other offices and would I be able to do conference calls.
I would like to implement vpns for secure file sharing between the offices. can the 520 or 540 handle this?
Is there anything else I am missing.