Agent Voice Response vs Teloz IVR

Agent Voice Response is a self-hosted system that turns an Asterisk PBX into a real-time voice AI agent. Callers can interrupt while it speaks through voice-activity detection. Its composable microservices let operators swap automatic speech recognition, language-model, and text-to-speech engines. It supports Asterisk AudioSocket on Asterisk 18 and later, including named systems such as FreePBX, VitalPBX, Vicidial, Elastix, and custom dialplans. Listed integrations include OpenAI, Anthropic, Deepgram, ElevenLabs, Google, Ollama, Vosk, Kokoro, Ultravox, OpenRouter, CoquiTTS, and Silero. Noise cancellation and echo suppression are described before audio reaches the model. Local deployments can use Vosk or Silero, Ollama, and CoquiTTS or Kokoro, keeping caller audio on the network according to the maker. Docker microservices can scale horizontally behind a load balancer. AVR is free for personal and commercial use, with no license keys or per-minute charge. Setup requires Docker images, provider configuration, and an Asterisk dialplan extension.

Teloz IVR routes callers through multi-level voice menus using NLP voice recognition and DTMF input. Its visual drag-and-drop flow builder is intended for operations teams creating or changing call flows without code. Nested prompts can branch according to time of day, language, and caller location, and a CRM lookup can inform routing. DTMF can also serve as a fallback to voice recognition. The product lists analytics on each IVR node. Teloz says it encrypts data in transit using TLS 1.3 and SRTP, and data at rest with AES-256. Every plan includes SAML 2.0 SSO, SCIM 2.0 provisioning, MFA, role-based access, and tamper-evident audit logs. A 14-day trial includes every feature and does not require a credit card. The free plan includes 100 US/Canada calling minutes, 50 SMS segments, one local DID, and 25 AI receptionist minutes per month. Paid plans are Starter at $7.99 a month per user, Professional at $15.99 a month per user, and Enterprise at $25.99 a month per user. The service is available on web, iOS, and Android.