Telephony
Voice AI on your own numbers and carrier
Buy a number in the app, connect one you already own from Twilio, Telnyx or your SIP provider, or forward your business line to the agent. With your own numbers, callers keep dialling the one they know.
How it works
From a number to a live agent.
Every number lives on the Phone Numbers page, whoever the carrier is. Add it, connect it, then tell it which agent answers.
Click Buy a Number to search by country, state, area code or the digits you want. Or click Bring Your Own and pick the provider your number is with: Twilio, Telnyx or Custom SIP - Direct.
For Twilio, enter your Account SID and Auth Token. For Telnyx, your API key. For a SIP provider, its SIP address, a username and password if it needs them, and the host SIP URI added at your provider so it can route calls to Trillet.
Open the number’s Configure dialog. Under Handle Calls, choose the agent that answers; under Handle Messages, the agent that replies to texts. Real calls use the agent’s published changes.
Keep your business number and forward it to the agent’s number. Pick your country, your line type and your carrier, choose when calls should forward if your carrier offers a choice, and dial the code shown. Then call the line from another phone to check the agent answers.
In action
Setting what a number does
A number’s settings: what it does with calls and with texts.
Carriers
Our numbers, or your carrier’s.
Each number has its own provider, so Trillet numbers and numbers from your own carrier sit side by side in one workspace.
Numbers in four countries
Buy numbers in the app in the United States, Canada, Australia and the United Kingdom: local numbers, and mobile numbers in the UK. Each result shows its region and whether it supports voice, SMS and MMS.
Your Twilio numbers
Connect a number from your own Twilio account with its Account SID and Auth Token. No Twilio account is needed if you use Trillet numbers instead.
Your Telnyx numbers
Connect a Telnyx number with your API key, and turn on messaging if the agent should send and receive texts on it.
Any SIP provider
Custom SIP - Direct connects a number from your SIP provider: give its SIP address and point the provider at Trillet’s host SIP URI.
Your line
Keep the number your callers know.
Forwarding sends calls from your existing business number to the agent. Nothing is ported, and your carrier keeps the line.
Call forwarding, no porting
Your business number stays with your carrier and stays the same; calls to it divert to the agent.
Backup or every call
On mobile lines, if your carrier supports it, choose when calls forward: when you don’t answer, when you’re busy, when you’re unreachable, or all calls. Landlines and VoIP lines forward all calls.
Steps for your carrier
Pick your country tab or VoIP / online, then mobile or landline and your carrier, and the app shows the code to dial for it.
Stop with your carrier’s code
Forwarding is controlled at your carrier, so stopping it means dialling the removal code the app shows for your carrier.
Routing
Decide who gets through, and to which agent.
Each number points at the agents that answer it, and each call flow can screen the calls that reach it.
Calls and texts on one number
Give a number a call agent under Handle Calls and a message agent under Handle Messages, so it answers both.
Inbound rules
Deny calls from numbers that match, contain, start or end with a pattern. Group rules into named rule sets and turn one on per call flow.
Block lists from a CSV
Import a list of phone numbers from a CSV, and each one becomes a block rule in a new or existing rule set.
Pre-call webhook
Your own system is called before the agent speaks on an inbound call.
Frequently asked questions
Can I use my own Twilio number with a voice AI agent?
Yes. On Phone Numbers, click Bring Your Own, choose Twilio, and enter the number with your Account SID and Auth Token. Then assign the agent that answers it. Calls run on your Twilio account, and you pay Twilio as before.
Does Trillet work with Telnyx?
Yes. Choose Telnyx under Bring Your Own, enter your Telnyx API key and confirm the number is active in your Telnyx account. Turn on Enable Messaging (SMS/MMS) if the agent should also text from it.
Can I connect my own SIP trunk?
You can connect a number from your SIP provider with Custom SIP - Direct. Enter the provider’s SIP address (a domain or IP address), a username and password if your setup needs them, and add the host SIP URI shown in the dialog to your provider’s settings so it can route calls to Trillet.
Do I have to port my phone number?
No. You can keep your number with your carrier and forward it to the agent; nothing is ported. Carrier activation, ring timing and voicemail vary by line and plan, so call the line from another phone to test the exact forwarding condition you chose.
Which countries can I buy numbers in?
In the app: the United States, Canada, Australia and the United Kingdom. UK numbers are mobile and the others are local. Toll-free numbers aren’t available through self-serve. For a number elsewhere, connect one you already own from Twilio, Telnyx or a SIP provider, where your carrier supports calls to and from Trillet.
Can we use more than one carrier?
Yes. Each number is connected on its own, with its own provider, so one workspace can run Trillet numbers next to numbers from your Twilio account, your Telnyx account or your SIP provider.
Can Trillet add an AI layer to our existing phone system or contact centre?
Yes, in a few ways. Forward existing lines to an agent, or connect the numbers themselves from Twilio, Telnyx or your SIP provider. For contact centres on ViciDial, Trillet’s native ViciDial integration is set up by Trillet’s team (there is no self-serve setup screen): ViciDial sends the call to the agent over SIP, the agent can transfer to a ViciDial in-group, and the disposition is posted back to ViciDial at hang-up. Avaya, Cisco CUCM, Mitel, Asterisk-based systems, Genesys and NICE can be integrated as custom work scoped per engagement; they are not out-of-the-box connectors.
How do we handle telephony compliance when deploying voice AI in several countries?
Calling, recording, consent, messaging and disclosure rules differ by country and use, and meeting them stays with you: Trillet doesn’t make a deployment compliant on its own, so check each country’s rules with your own advisers. Trillet gives you controls to work with. You choose the carrier for each number, so calls can run on a carrier you have vetted for that country. Inbound rules block the numbers you list. HIPAA mode, switched on per agent, stops call recordings and transcripts being stored on Trillet’s servers. Text reminders and notifications are sent from a Trillet number registered for A2P 10DLC, so you don’t register for those messages.
Do I need a phone number to try an agent?
No. A shareable demo link lets anyone talk to a published agent in a browser, with no account, before any number is connected.
Keep your numbers. Add the agent.
Book a demo and we’ll connect an agent to a number you already own, or to a new one.