I have softswitch for sale

Centralized authentication, authorization and accounting,
NAT Traversal
SIP-H323 both ways convertion
Interoperability with most vendors;
proxy functionality
DoS attack prevention
Intelligent call routing for LCR and improved quality
High Scalability
Reliable and stable

NEW: MVTS Best Cost Routing Processor and Mera CDR analyzer available!

More details at skystar1@hotpop.com

Best regards,
Bill Ling