Infrastructure · Voice + 2-way SMS · Agentic AI
A clean API, a SIP trunk, three SDKs, real-time webhooks, and a 48-hour sandbox with live Spanish and Mexican numbers. The substrate that turns a language model into a participant in the real world.
Architecture
Your agent makes a decision. We turn it into a call or a message that lands on a phone. The reply comes back as a webhook in milliseconds. No orchestration layer between you and the network.
Direct SIP trunking with sub-200ms latency. Compatible with native AI TTS and ASR engines. Outbound origination from local +34 or +52 numbers, inbound termination on those same numbers — DTMF, transfer, hold, all standard SIP features.
Mobile-terminated outbound and mobile-originated inbound, full duplex on the same long number. Inbound MO events dispatched as webhooks within seconds. Delivery reports per message. Alphanumeric senders registered in the Spanish Alias Registry.
Integration surface
01 / REST API
Fully documented endpoints for SMS send and receive, voice call management, number provisioning, and CDR query. Real-time webhooks for inbound MO events and call status updates. Idempotency keys, retry semantics, signed callbacks.
POST /v1/messagesPOST /v1/callsGET /v1/numbersPOST /v1/webhooks
02 / SIP trunk
Direct SIP connectivity into your voice platform — Asterisk, FreeSWITCH, Twilio TaskRouter, your own switch. Carrier-grade TLS-encrypted signalling and SRTP media. Sub-200ms RTT. Native compatibility with the major AI TTS and ASR engines on top.
sip:sip.chadeva.es:5061
Transport: TLS
Media: SRTP / AES-256
Codecs: G.711a, G.722, OPUS
03 / SDK · Sandbox
Idiomatic libraries for the three languages most integrators use, with retry, backoff, signature verification and webhook helpers built in. Sandbox environment provisioned in 48 hours with live test numbers in ES and MX, real SMS delivery, real voice calls.
npm install @chadeva/sdk
pip install chadeva
composer require chadeva/sdk
Why it works for agents
An AI agent without a number isn't autonomous. It's just an interesting demo.
Use cases · measured outcomes
Banking · insurance · consumer credit
AI agent detects a warm lead in the CRM → calls from a local number → sends an SMS with the e-signature link → customer signs → CRM is updated automatically.
+40% CONVERSION
Healthcare · clinics · personal services
24h before the appointment, an SMS arrives from a local number. The customer replies Y/N. The AI auto-confirms or reschedules. The calendar is updated in real time.
−30% NO-SHOWS
Telecom · utilities · subscriptions
The AI detects a churn signal in the CRM → calls proactively from a local number → offers retention on the voice channel → follow-up SMS with the offer link.
−30% CHURN
Retail · e-commerce · marketplaces
Post-service, the AI sends a personalised SMS from a local number with a targeted offer. If there's no reply in 2 hours, the AI calls. The sale closes on the call.
40% AUTOMATED CONVERSION
Sandbox
Sandbox access provisioned in 48 hours: a live Spanish number, a live Mexican number, full API and SIP access, and a dedicated engineer on Slack for the first two weeks of integration.