My company is looking at purchasing the UC540 system for our offices- is this the best option for 15 users, with the possiblility of 1 or 2 remote users, ability to use mobility and presence and room to grow with other features in the future? Also, can anyone recommend a Cisco Partner in the Arlington, VA area who is experienced in the UC500 series systems?
This thread is a bit old so I'm not sure if you've found your answer however the UC500 series has been designed for the SMB market so would be good for 15 people. How many offices do you have? Have a look at the following link for a comparison of the three models.