Voice for AI builders · SIP, PSTN, WebRTC, WhatsApp
The phone network for your voice AI agents.
Building your own voice agent? EnableX gives it phone numbers in 50+ countries, SIP, WebRTC and WhatsApp Voice, and streams live call audio to your speech and language models over WebSocket. Already have a carrier, SIP trunk or PBX? Connect it and keep your numbers.
What you get when you build your own voice agent on EnableX
You bring the AI. We handle the call: numbers, routing, audio and the rules each country applies to calling.
Live call audio over WebSocket
A two-way audio stream for every call. Send it to any speech-to-text, LLM and text-to-speech you choose, hosted or your own.
Phone numbers in 50+ countries
Local, mobile and toll-free numbers from the console, with porting if you want to bring your own.
PSTN, SIP, WebRTC and WhatsApp Voice
Call customers on any phone, connect your own SIP trunk or PBX, or add in-app and in-browser calling.
Events and actions on every call
Webhooks for ring, answer, DTMF and hang-up, plus transfer, recording and hold through the API.
Media close to your callers
Regional points of presence across Asia-Pacific, the Middle East, Europe and North America keep the audio round trip short.
Calling rules handled for you
Calling windows, do-not-call lists and consent rules applied per country before the call leaves our network.
Would rather not build it yourself? Our managed voice agents run on the same network.
Global telephony on one build
Voice AI is only as good as the telephony underneath it. EnableX gives you global virtual numbers, carrier-grade SIP, and regulator-ready compliance in every market you serve, with direct carrier interconnects across Asia-Pacific and the Middle East.
Global · 50+ countries
Local-presence virtual numbers, toll-free, mobile, and landline ranges in every major market: North America, Europe, LATAM, Africa, and Asia. Self-service provisioning, number porting, and STIR/SHAKEN where applicable.
Asia-Pacific
Singapore-headquartered, with direct interconnects across India, Indonesia, Malaysia, Philippines, Vietnam, Thailand, and Singapore. Per-country calling-window, do-not-call and consent rules handled at the platform level.
Middle East
UAE, KSA, Bahrain, Kuwait, Qatar, Oman, Egypt. Carrier-grade interconnects, Arabic-region number ranges, in-country data residency, and on-premise deployment available for sovereign workloads.
What enterprise teams actually get on EnableX telephony
Four things that decide whether a voice agent works in production: quality, regulator-readiness, number authenticity, and flexibility. EnableX ships them on every call, in every market.
Sub-second turn-taking, on every continent.
Regional points-of-presence keep media latency low, and codec-aware transcoding (G.711, G.722, Opus) preserves voice quality across IP, PSTN, and mobile networks. Routes fail over automatically between carriers when quality degrades.
- Sub-second turn-taking, end-to-end
- Regional POPs across APAC, ME, EU, NA
- G.711, G.722, Opus, transcoding included
- Real-time route-quality monitoring and auto-failover
Regulator-ready out of the box.
The regional rules that block most voice AI deployments are baked into the platform, not your problem to wire up. Calling-window enforcement, DND list scrubbing, header registration, consent capture, recording retention: all handled before the call leaves our SIP.
- Calling-window, do-not-call and consent rules enforced per country
- Sender and header registration where the market requires it
- In-country data residency where regulation requires it
- Caller-ID rules, including STIR/SHAKEN signing where required
- Audit-grade call logging and on-prem retention available
Local-presence numbers your customers actually pick up.
Customers are more likely to answer a call from a local-format number than an international one. EnableX provisions virtual numbers in 50+ countries (toll-free, mobile, and landline) straight from the console. Number porting supported when you want to bring your own.
- 50+ countries with self-service provisioning
- Toll-free, mobile, and landline ranges per market
- Local-presence dialling for outbound campaigns
- Number porting in / porting out supported
- STIR/SHAKEN signing on US/CA outbound where required
BYO SIP, BYO number, BYO voice AI stack.
Already have a carrier contract? Bring the SIP trunk. Already have a number range? Port it. Building your own STT/LLM/TTS pipeline? Stream raw audio over WebSocket and let EnableX handle only the telephony. The platform meets you where you are.
- BYO SIP trunk (SIP / SIP-over-TLS, any provider)
- BYO number range with port-in / port-out
- WebSocket media streaming for builders (sub-second target)
- Cloud, hybrid, or on-premise deployment
- One contract for telephony and voice AI, no stitching
Connect the way you already work
Bring your own SIP trunk
Standard SIP / SIP-over-TLS signalling. EnableX terminates the SIP, runs the voice agent, and resolves or warm-transfers to your contact centre. No need to switch carriers.
WhatsApp Business Voice Calling
Customers tap "Call" inside the WhatsApp thread; the call lands on your voice AI agent, with chat history pre-loaded as context.
Read the walkthroughIn-app voice, no number needed
Embed a voice agent in your app or website. No PSTN cost, no number provisioning. Falls back to PSTN if WebRTC fails.
See Voice API for WebRTCWebSocket media streaming
Bidirectional raw audio (PCM / Opus / G.711), sub-second one-way latency (target). Pipe to any real-time STT, LLM or TTS service, an open-source voice framework, or your own model.
Voice API + WebSocket docsExplore more from EnableX
FAQ: Telephony / SIP / PSTN
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