---
id: "axiom_compendium_018"
category: "general"
confidence: 0.97
date: "2026-02-20"
source_file: "genesis_compendium_8e2a_epochs_3_9"
---

# axiom_compendium_018

Voice profiles must never be hardcoded into core Telnyx WebRTC scripts. Store the voice_profile parameter (voice_engine, voice_id, fallback_voice_id, pacing_multiplier, pitch_adjustment) at the Agency/Client tenant level in Redis UCO. Adding a new voice requires zero core engine changes — only a string mapping in configuration.
