Connect any phone system.
Sound like any voice.
SIP, call forwarding, webhooks, Twilio, Vonage — we support every practical way to put Lippy on your number. Pair it with ElevenLabs, Rime, Cartesia, or any TTS, and bring your own LLM if you want full control.
How calls reach Lippy
Every connection option, one agent
You shouldn't have to rip out your phone system to add AI. Pick the path that fits — we handle the rest.
SIP trunking
Point any SIP-compatible PBX, SBC, or carrier trunk at Lippy. Keep your existing DIDs, hunt groups, and failover — we answer on the trunk you already trust.
Call forwarding
Forward your business line to a Lippy number in minutes. No hardware swap, no cutover weekend — flip forwarding when you're ready and flip it back anytime.
Webhooks & events
Receive call-start, call-end, transcript, booking, and custom events over HTTPS. Drive your own CRM, ticket queue, or routing logic from every conversation.
Any carrier
Twilio, Vonage, your telco, your CCaaS — if it can deliver a call or SIP invite, we can take it. Bring your own number or use one we provision.
- Keep your existing phone numbers
- No rip-and-replace of your PBX
- Failover back to humans anytime
- Works with multi-location hunt groups
Carriers & trunks
Twilio, Vonage, or yours
We're carrier-agnostic. Use a Lippy-provisioned number, connect Twilio or Vonage, or trunk from whatever you already pay for.
Twilio
Numbers, SIP, programmable voice
Vonage
Numbers, SIP, Voice API
Your PBX / SBC
Asterisk, FreeSWITCH, Genesys, RingCentral, and more
Any SIP trunk
Bandwidth, Telnyx, Inteliquent, regional carriers
Text-to-speech
Voices that sound human on the phone
ElevenLabs, Rime, Cartesia, Deepgram, PlayHT — or any other TTS engine. We pick for latency and clarity, or you pick for brand.
ElevenLabs
Rime
Cartesia
Deepgram Aura
PlayHT
Any TTS
OpenAI, Polly, Google, or yours
Reasoning models
Use our models — or yours
Most customers run on our tuned defaults. If you need a specific model, private deployment, or OpenAI-compatible gateway, bring a custom LLM and we'll wire the agent to it.
OpenAI
GPT-class conversation & tools
Anthropic
Claude for careful reasoning
Custom LLM
Your endpoint, OpenAI-compatible gateway, or private VPC model
Ready to put Lippy on your number?
Tell us how your calls flow today — SIP, forwarding, Twilio, Vonage — and we'll map the cleanest path in a short demo.