Trusted by VoIP operators across the world
High Performance and Extremely Low Latency
We developed our SIP switching engine from the ground up in order to ensure that it takes on extremely high CPS with very low latency.
High Call Concurrency
Robust SBC to Fence off any DDOS attack
Class 4 Fusion will terminate your normal calls while blocking out hundreds of thousands of spam calls per second.
Real-Time Call Flow
Extremely Fast Response
We value excellence, and go above and beyond in order to deliver the most innovative, intuitive and intelligent Class 4 Solution to our customers.
Class 4 Fusion has everything you need to run a successful VoIP business.
You can add and remove prefix whatever ways you need based on length or prefix condition rule. Replace ANI or DNIS with random set or static replacement.
You can add and remove prefix whatever ways you need based on length or prefix condition rule.
You can decide when to route to next IP or next trunk or stop.
You can determine CPS and Channel limit based on : ANI, DNIS, Trunk, Carrier, and IP address.
SIP Cause Control
You can decide when to return what return cause to your ingress carrier.
You can decide when to return what return cause to your ingress carrier. We also support register to your egress gateway with SIP REGISTER.
You can decide to pass or block RPID, OLI, PRIV, DIV, PAID, PCI, LRN, X-Header
Media IP Blocks
You can specify the media IPs of any known FAS routes that you want to block and let the call to fail over to the next vendor trunks.