Question 1

How does Sippy B2BUA handle WebRTC calls?

Accepted Answer

It provides an RFC7118-compatible secure websocket interface for WebRTC clients. When combined with RTPproxy's dtls_gw and ice_lite modules, it acts as a high-capacity gateway, enabling seamless WebRTC to SIP conversion without media latency.

Question 2

What's the difference between Sippy B2BUA and a SIP proxy?

Accepted Answer

Sippy B2BUA maintains full call state, allowing for accurate accounting and routing, while SIP proxies only handle transaction state. This makes B2BUA suitable for billing but requires more resources and setup for call control.

Question 3

How to set up Sippy B2BUA for pre-paid billing?

Accepted Answer

Leverage its CDR generation and real-time call control to integrate with a rating engine. You'll need custom logic to monitor call duration and apply billing rules, often requiring external systems or scripting based on the documentation.

Question 4

Sippy B2BUA vs Asterisk: which is better for call control?

Accepted Answer

Choose Sippy B2BUA for high-performance, stateful call control without media processing, ideal for billing and routing. Use Asterisk for a full PBX with built-in media features, but it may add latency and complexity in media paths.

Question 5

Can Sippy B2BUA integrate with RADIUS servers?

Accepted Answer

Yes, it supports Cisco-compatible RADIUS for authentication, authorization, and accounting. This allows seamless integration with existing telephony infrastructure that uses RADIUS for user management and billing purposes.

Question 6

What are the hardware requirements for handling 10,000 calls?

Accepted Answer

Performance depends on network and hardware; the project cites 5,000-10,000 sessions per server. Ensure sufficient CPU, memory, and low-latency networking, with potential tuning needed for optimal results, as implied by the performance benchmarks.

Sippy B2BUA

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