Vapi
BYOC SIP trunk for Vapi assistants. Inbound + outbound, A-attestation by default.
DIDHub Integrations
DIDHub speaks standard SIP, so it works with every major VoIP platform, PBX, AI voice framework, and softphone — no proprietary gateway, no vendor lock-in, no special hardware. Pick your platform below for setup steps.
AI voice agent platforms
One-click BYOC SIP trunk for every major AI voice platform. STIR/SHAKEN A-attestation, regional ingress for sub-50ms latency, 136-country DID coverage, bulk DID provisioning API.
Retell AI
Connect a DIDHub SIP trunk to Retell. Per-customer DID assignment, webhook events.
ElevenLabs Conversational AI
Low-latency interconnect for ElevenLabs realtime models.
Bland AI
Bland AI phone-number integration with DID pool rotation for outbound campaigns.
Synthflow
BYOC SIP trunk for Synthflow voice agents.
LiveKit Agents
SIP-to-LiveKit gateway for the open-source agents framework.
Pipecat (Daily)
SIP trunk for Pipecat voice-agent pipelines.
Vocode
SIP carrier for the Vocode open-source voice-agent framework.
Cartesia
SIP trunk for Cartesia Sonic-powered low-latency agents.
Deepgram Voice Agent
SIP-to-WebSocket bridge for Deepgram's STT + LLM + TTS stack.
OpenAI Realtime API
Bridge OpenAI's Realtime API to PSTN via DIDHub + LiveKit / Pipecat.
AssemblyAI
Real-time speech-to-text and LeMUR LLM for AI voice agents. SIP-to-WebSocket bridge for PSTN ingress.
Microsoft Teams & Zoom
Microsoft Teams Direct Routing
Managed Teams SBC-as-a-Service. Phone numbers in 130+ countries. Three PowerShell commands and Teams users have PSTN. Cheaper than Microsoft Calling Plans, broader country coverage.
Zoom Phone BYOC
Phone numbers for Zoom Phone via Bring Your Own Carrier. International coverage Zoom's bundled plans don't reach, per-DID pricing instead of per-seat add-ons.
Hosted PBX & sister platforms
PBX.IM — Hosted PBX
PBX.IM hosted PBX runs on the same group of operators as DIDHub. Provision a DIDHub DID, route it into your PBX.IM tenant, and PBX.IM handles call control, IVR, voicemail, and queueing on top.
VoIP / IP-PBX platforms
3CX
SIP trunk for 3CX deployments — on-prem, hosted, or 3CX StartUP. Inbound + outbound + DID provisioning.
FreePBX
FreePBX SIP trunk configuration with DIDHub. Inbound routing, outbound routes, DID inbound CID name lookup.
Asterisk
Raw Asterisk PJSIP / chan_sip configuration. Compatible with custom dialplans and AGI scripts.
FusionPBX
FusionPBX SIP gateway and inbound route configuration with DIDHub credentials.
Softphones & WebRTC
Softphones
Zoiper, Linphone, MicroSIP, Bria, Groundwire (Acrobits) — SIP credentials for desktop and mobile.
WebRTC / browser softphones
SIP over Secure WebSockets (WSS) + DTLS-SRTP encrypted media. Compatible with JsSIP, SIP.js, click-to-call widgets.
API + SDKs
REST API documentation
Provision DIDs, manage routing, send SMS, and receive webhooks programmatically. SDKs for Node, Python, Go, PHP, Ruby, Java.
Webhooks
Call events (started / answered / ended / recording-available), SMS events, and DID lifecycle events. Signed payloads, retry-friendly.
Don't see your platform?
If your platform speaks standard SIP, DIDHub will work with it. We've integrated with custom in-house PBXes, niche regional CPaaS platforms, and unreleased AI voice frameworks. Email [email protected] with the platform name and we'll either confirm it works out of the box or write up the integration.
Ready to get a number?
Pick a DID in 130+ countries from $1.99/month. Activates instantly on most numbers.