Let me offer you a turnkey Class 5 Switch solution: perfect for calling cards. PortaSwitch consists of a soft-switch and application servers that provide access to the IP Centrex/IP PBX feature set: Porta SIP, BILL and UM
Scalable and highly stable Unix based software, installed on 4 servers.
We provide full installation, at some extra fee you can order tech support, configuration of your system per your requirements and technical task.
Affordable prices, quick problem resolving, professional attitude!
Feel always free to contact me directly, my MSN, e-mail: skystar1(at)hotpop.com
Yahoo IM: bll_lng