#Telephony Application Server – Open Source Version

Telephony Application Server (TAS) is an open source telecom platform by PAiCore Technologies. It lets MNOs and MVNOs deliver VoIP services—call control, IVR, conferencing—through a no-code service builder and a scalable, high-availability core.

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Features

• Core Call Control: routing, forwarding, conferencing, termination
• No-Code Service Creation: visual IVR and voice-service builder
• Scalability & High Availability: Kubernetes-ready, clustered operation
• Billing Integration: hooks for usage-based charging engines
• Media Processing: transcoding, codec negotiation, QoS metrics
• API-First Design: REST and WebSocket APIs for CRM/OSS/BSS integration

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Included Components

• Frontend: React + Tailwind.js GUI for managing services
• Backend: Spring Boot microservices for SIP/CSCF logic

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Prerequisites

• Java 11 or newer
• Node.js 16+ and npm
• Redis 6+ (cluster mode recommended)
• PostgreSQL 12+
• Ubuntu 22.04 LTS or similar

Ensure your DB user has CREATE/DROP privileges and Redis persistence is enabled.

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Installation & Configuration

1. Clone repos

   git clone https://github.com/paicbd/telephony-application-server-be.git
   git clone https://github.com/paicbd/telephony-application-server-fe.git

2. Backend

   cd telephony-application-server-be
   cp config.example.yaml config.yaml
   # Edit config.yaml with DB and Redis settings
   ./mvnw clean package
   java -jar target/tas-be.jar

3. Frontend

   cd ../telephony-application-server-fe
   npm install
   npm run build
   npm start

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Best Practices

• Use separate Redis/DB per environment (dev, staging, prod)
• Store secrets in Vault or Kubernetes Secrets, not in code
• Expose JMX/SIP metrics to Prometheus and Grafana
• Prototype with small PCAP samples before scaling

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Contributing

1. Fork the repo
2. Create a feature branch
3. Add tests and docs
4. Submit a pull request

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Support & Contact

This open source edition is community-maintained by PAiCore Technologies.
For enterprise support or custom solutions, visit:
https://paicore.tech/