Glossary · 15 terms
Voice AI glossary.
The words behind AI voice agents, phone systems and speech models, explained plainly.
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- Large language model (LLM)A large language model is an AI model trained on large amounts of text to understand and generate language, and is the part of a voice agent that decides what to say and which tools to use.
- Latency in voice AILatency in voice AI is the delay between a caller finishing speaking and the agent starting to reply, the gap that decides whether a conversation feels natural.
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- SIP trunkA SIP trunk is a virtual phone line that carries calls over the internet using the Session Initiation Protocol, connecting a phone system or voice platform to the public phone network.
- Speech-to-text (STT)Speech-to-text, also called automatic speech recognition (ASR), turns spoken audio into written words.
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- Warm transferA warm transfer hands a call to another person with context, so the caller does not have to repeat themselves, unlike a cold transfer that simply forwards the call.
- WebhookA webhook is an HTTP request one system sends to another when something happens, so the receiving system learns about events without polling.
