Hi,
http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps7293/UC540_560_2pgr.pdf
Technology you can trust to help your business succeed
Cisco Unified Communications 500 series is a solution that
you can count on for advanced voice and data applications for
today and as you grow:
• 24 user licenses included (phone and voicemail)
• Integrated business productivity applications included
• Collaboration tools such as video and conferencing
• Easy to grow with simplified licensing
• Flexible deployment options
• Remote teleworker capabilities
• Integrated wireless capabilities
• Fully secure remote access
Thanks,
Anand