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March 30, 2026

AI Calling Architecture Explained: How SIP, LLM, TTS, and STT Work Together to Make AI Phone Calls (2026)

AI CallingAI Calling ArchitectureSIPLLMText to SpeechSpeech to TextVoice AITough Tongue AIAI InfrastructureConversational AI

A deep technical explainer on how AI calling actually works under the hood. Learn how SIP, STT, LLM, and TTS components work together in real time to create natural AI phone conversations, the latency budget for each component, and why Tough Tongue AI abstracts all this complexity into a no-code platform.

March 30, 2026

What You Need to Build AI Calling in Your Company: The Complete Tech Stack Guide (2026)

AI CallingAI Calling Tech StackVoice AISIP ProviderLLMText to SpeechSpeech to TextTough Tongue AISales AutomationAI Infrastructure

The complete guide to every component you need to build AI calling in your company. From SIP providers and speech-to-text engines to LLMs and CRM integrations, learn exactly what it takes to launch AI calling -- and why most companies should use Tough Tongue AI instead of building from scratch.