Specialized businesses: Carriers / ISPs

I need...

• A proven high quality product with record up-times
  • Simple approach => Less potential problems
  • Tested against carrier equipments (Nortel, Cisco, ...)
  • High performance VoIP soft-switch
• To increase my portfolio with additional services
  • Installable in hosted or in-sitio modes
  • Add services to my voice accesses (Advanced IVRs, Call Center, ...)
• A complete back-end for smaller implementations
  • Tested with up to 5000 users on a single high-end server (potentially much more).
  • ISP-grade authentication (PPPoE, L2TP, Captive Portal, 802.1x, RADIUS backend, ...)
  • Advanced router with layer 7 traffic detection and shaping
  • Highest quality VoIP connections for your customers