Telephony infrastructure for
AI voice agents

Telephony infrastructure for AI voice agents — SIP trunking, phone numbers, real-time audio streaming and programmable call control, self-serve through an API. It sits under your agent platform rather than replacing it.

Vapi, Retell AI, LiveKit, Pipecat, Ultravox, Bolna, ElevenLabs and OpenAI Realtime, over standard SIP. Nothing changes on the platform side.

Yes. A BYOC trunk attaches directly to the Media Engine, preserving the single media hop, and connects over standard SIP — nothing changes on the platform side. Your existing carrier contract stays intact, and you can run both routes side by side.

Search, buy and assign a number by API in 130+ countries — local, mobile or toll-free — then point it at your agent over SIP. Activation is instant and there's no ticket in the path.

About 7 minutes to integrate and 10 minutes to a first successful call. Roughly a week from POC to production.

Media crosses exactly one internal relay, with control and media planes decoupled. Sub-80ms one-way. Every additional hop adds a queue and a jitter buffer, and no tuning removes them afterwards.

A conversational turn has roughly 500ms end to end before the pause becomes noticeable, and four things spend it: speech-to-text, the model, text-to-speech, and the network carrying audio both ways. Telephony is the only one you can't fix later by swapping a vendor — it's set by how many relays the media crosses. Vobiz uses one, at sub-80ms one-way, leaving roughly 340ms of the budget for the parts you control.

Number reputation is managed as an operated service — 10DLC registration, toll-free verification, and monitoring that has cut spam flag rates on managed numbers by 30%.

Yes, inside the telephony network rather than leaving it to your pipeline. Noise cancellation, packet loss concealment and forward error correction run on every call at the Vobiz edge, included in the per-minute rate — so what reaches your speech-to-text is already cleaned.

On the leg Vobiz controls — our edge to your agent — audio is carried at HD fidelity rather than transcoded down to narrowband. What arrives from the caller depends on their carrier and handset, and that inbound audio is cleaned rather than recreated. The practical effect is higher recognition accuracy, not studio quality from a 2G handset.

Every call detail record carries 43 fields including MOS, jitter, packet loss and hangup attribution, fetchable by call_id.

No. No bundled models, no revenue share, no exclusivity, and no clause preventing a component being swapped out.