Custom Class 4 Softswitch Solutions
A Good Carrier Deserves a Better Switch
And a carrier like yours needs a Class 4 softswitch that actually keeps up!
Build My SwitchTrusted by 750+
G2
Gartner
TrustpilotEverything After the Switch Gets Better
And the custom one is closer than you think
- CPS drops under peak load
- Routing leaks margin per call
- Failover exists but rarely triggers
- Rigid integrations slow operations
You can’t scale traffic on a system that struggles to route it.
The Impact of a Custom Class 4 Softswitch
Turn your wholesale routing into an untouchable profit center.
More Margin on Every Route
100 to 10,000 CPS Seamlessly
Multi-Carrier Connectivity Without Compromise
Every Call Billed to the Last Second
99.999% Uptime, Guaranteed
Zero Blind Spots Across Network
Features of Our Custom Class 4 Softswitch
Everything you need to connect the world.
Routing & Interconnect
- Carrier-grade SIP routing
- Least Cost Routing (LCR)
- LRN & DNC lookup
- Geographic & non-geographic routing
- SIP normalization
- Codec transcoding
Performance & Scalability
- High CPS optimization
- Load balancing
- Cluster configuration
- Active-active / passive failover
- Traffic distribution logic
- Latency control
Security & Control
- SIP rate limiting
- Flood protection
- IP whitelisting & blacklisting
- Spoofing prevention
- Access control policies
- Secure signaling layers
Monitoring & Integration
- Real-time CDR generation
- Prepaid & postpaid billing compatibility
- ASR, ACD & QoS metrics
- Prometheus & Grafana support
- REST APIs
- Webhook notifications
Who Needs Class 4 Softswitch Solutions?
Built for the networks that carry the world's voice traffic.
Wholesale VoIP Termination Providers
International Carrier Interconnects
Telecom Aggregators
ITSPs & White-Label Providers
MVNO & Reseller Platforms
Large-Scale SIP Trunking Operations
How Our Softswitch Fits Into Your Architecture
A routing core that connects, translates, and controls global traffic.
Ingress Carriers / Providers
Incoming international traffic enters your network
Session Validation & Routing Logic
Prepares and evaluates sessions for routing decisions
Routing Engine (LCR Core)
Selects the most cost-effective and optimal path
Protocol & Codec Handling
Ensures compatibility across carriers and networks
Load Balancing & Failover
Distributes traffic and maintains uptime under load
Egress Carriers / Termination Points
Delivers calls to global destinations
Frequently Asked Questions
A Class 4 softswitch is designed for wholesale VoIP providers to route massive volumes of traffic between carriers across long distances. A Class 5 softswitch, on the other hand, is meant for retail, providing end-user features like voicemail, call forwarding, and PBX functionalities directly to consumers or businesses.
Custom Class 4 softswitch development gives you complete ownership of your routing logic and eliminates expensive, per-channel or per-session licensing fees. It ensures the architecture is built specifically for your traffic patterns, allowing you to scale your wholesale business profitably without vendor lock-in.
A carrier-grade Class 4 softswitch is engineered for extreme throughput. It is built to handle massive Calls Per Second (CPS) and thousands of concurrent calls with ultra-low latency. It features active-active clustered failovers to guarantee the 99.999% uptime required by Tier 1 and Tier 2 telecom operators.
Yes. Our class 4 softswitch solutions generate highly accurate, real-time Call Detail Records (CDRs) that can be exported in various formats (CSV, JSON, SQL). The switch integrates seamlessly with your existing prepaid or postpaid billing ecosystems to ensure accurate rating and flawless wholesale settlements.
Absolutely. As an experienced provider of softswitch development services, we handle end-to-end migrations from legacy or outdated softswitches. We ensure zero downtime, complete data integrity, and precise LCR routing porting for all your VoIP softswitch solutions.
