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Voice AI · Infrastructure

Your AI agents, connected to the world's phone network.

International numbering + SIP trunk over IP or VPN with Opus, u-law and a-law. Your models talk; we provide the number, the route and the SMS.

Connect your AI platformSee number coverage
Direct path for voice AI. A voice AI platform reaches local numbers and the PSTN through the cAIl owned network.
INBOUNDOUTBOUND
  1. 01

    VOICE AI

    Agent · STT · TTS

  2. 02

    cAIl OWNED NETWORK

    Direct SIP · E.164

  3. 03

    PSTN

    Local numbers · direct routes

Origination → agentTermination agent → PSTNSMS per DID
A voice AI platform reaches local numbers and the PSTN through the cAIl owned network.

Your platform · our core · the PSTN

Architecture

Your platform · our core · the PSTN

Managed SIP handoff from your agent to local networks, with E.164, SRTP and SMS on the same DID, tested to your concurrency and CPS.

INBOUND

Inbound to your DIDs → your agent over SIP (origination), via IP or VPN.

OUTBOUND

Outbound from your agent → PSTN (termination) over direct routes managed by cAIl.

SMS

SMS on the same DID where the market enables it: OTP, campaigns and post-call 2-way.

What is included

Everything your agent needs to operate on the phone

Market-specific number types

International E.164 over direct interconnect — we operate in Chile and Mexico and manage the rest with our NOC. Mobile/convergent recommended for AI.

Two-way SIP voice

Two-way SIP/TLS origination and termination with RTP/SRTP. Opus, PCMU (u-law), PCMA (a-law) and G.722 by market and platform.

Programmable SMS per DID

OTP, notifications, bulk campaigns and 2-way in enabled markets, via SMPP/REST.

Managed operation

Provisioning follows each market's published lead time, with monitored routes and a managed operations team.

Integration

Works with your stack

Your SBC or SIP stack interconnects straight into our network over IP or VPN, with testing before traffic: Asterisk, FreeSWITCH, Kamailio, your own SBC or AI voice platforms (Vapi, Retell, Bland, ElevenLabs, LiveKit).

Connect your AI platform
  • Vapi
  • Retell AI
  • ElevenLabs
  • LiveKit
  • Asterisk / FreeSWITCH / SBC

Go-live

From quote to first call

  1. 01

    Quote

    Markets, number types and expected minutes → rate in one business day.

  2. 02

    MSA + KYC/KYB

    Agreement and corporate verification.

  3. 03

    Provisioning

    Numbers activated and routes tested with your platform.

  4. 04

    Production

    Live traffic, monitored by the NOC.

Give your agent a real number with voice and SMS.

Where they call, how many minutes and SMS. Inventory and pricing per market within one business day.

Connect my AI agentSee number coverage