Can you keep your existing phone number with an AI receptionist?
Every business that thinks about an AI receptionist hits the same wall about ten minutes in. The number is on the van. It’s on the signage, the invoices, the Google listing, and in the phones of every customer who’s ever called. Whatever happens next, that number cannot change and it cannot go dark.
So the question isn’t really “is the AI any good?” It’s “what does this do to my phone number?” And the answer depends entirely on which of two very different things a vendor is actually asking you to do.
The short version: There are two ways to get calls to an AI receptionist. Porting moves the number itself onto the vendor’s account — you fill in a transfer authorisation, wait, and there’s a cutover. Pointing leaves the number where it is and just forwards the call leg. Pointing takes minutes, is reversible with one switch, and your number never leaves your own carrier account. Before you trial anything, ask which one you’re signing up for.
Why so many vendors want to port your number
If a vendor supplies the number, everything downstream is simpler for them. They control the routing, the billing, and the call quality end to end, and there’s no awkward middle layer where someone else’s trunk can misbehave.
Porting is a real, regulated process — you authorise the transfer, the two carriers coordinate, and at some point the number stops being served by the old one and starts being served by the new one. It works. Millions of numbers get ported every year.
But look at what you’ve agreed to. Your number is now an asset on a vendor’s account. If the trial doesn’t work out, leaving isn’t a cancellation — it’s another port, in the other direction, with another authorisation and another cutover. You’ve turned “let’s try this for a month” into a decision with an exit cost.
That’s a lot to accept from something you haven’t heard answer a call yet.
The other option: point the call, don’t move the number
The alternative is to leave the number exactly where it is and change only where the call goes.
Phone carriers have supported this for a long time. Your carrier already knows how to hand a call to a destination you nominate, over a standard protocol called SIP. Instead of “this number now belongs to the AI vendor,” the arrangement is “when this number rings, send the call here.” The number stays on your carrier account, under your billing, in your name.
In the industry this is called bring-your-own-carrier, or BYOC. It’s the model Rindee uses, and it’s worth understanding even if you end up choosing someone else, because it changes what a trial costs you.
What that actually means on a Tuesday afternoon
The practical differences are the whole point:
- No porting paperwork. No transfer authorisation, no coordination between two carriers.
- No cutover window. The old routing works until the new routing is switched on. There’s no moment where a call could land nowhere.
- Minutes, not weeks. Once you have your carrier credentials to hand, it’s about ten minutes per number.
- Reversible with one switch. Inbound calling is a toggle per number. Turn it off and calls go back to ringing exactly where they rang before.
- Your number stays yours. It’s still on your carrier account. If you stop using the AI, you stop using the AI — there’s nothing to unwind.
That last one is the real argument. A trial you can end by flipping a switch is a trial you can actually run.
If you’re already on Telnyx or Twilio
If your numbers sit on Telnyx or Twilio — common for anyone who’s had a developer set up their phone system, or who uses a VoIP provider rather than a traditional telco — this is close to a copy-paste job.
You give Rindee an API key (Telnyx) or an Account SID and Auth Token (Twilio). It reads the numbers on your account, you tick the ones you want, and it configures the carrier side for you: the SIP connection, the credentials, and the routing entry that makes incoming calls actually arrive. Then you flip inbound on for the numbers you want answered.
New numbers deliberately start with inbound off, so nothing takes a live customer call before you’ve decided it should.
If you’re on something else
Any carrier that can send a SIP trunk works, which is most of them. It’s more manual — you point the trunk at Rindee yourself and add each number by hand — but there’s no porting here either.
Worth knowing before you call your provider: you’ll need the trunk to reach Rindee over TLS, and you’ll need the list of IP ranges your carrier sends calls from. Both are standard things a SIP provider can tell you. If yours can’t do TLS on the signalling leg, that’s the one case where it’s worth a conversation before you commit.
The honest limits
Pointing instead of porting isn’t free of trade-offs, and a few of these catch people out:
- Rindee doesn’t port numbers at all. If you actively want your number moved onto a new provider, this isn’t that. The number stays with your carrier.
- You still need a carrier. BYOC means bring one — if you don’t have a SIP-capable account anywhere, that’s a prerequisite, not something the AI replaces.
- One number routes to one place. If you have several branches, that’s either one number and one agent that covers all of them, or a number per branch. Routing a single number by where the caller happens to be isn’t supported.
- Your carrier is still your carrier. Their outage is still your outage. BYOC keeps you in control of the number, which also means you keep the relationship and the bill.
What to ask before you sign anything
Whoever you’re evaluating, four questions sort out the answer quickly:
- Do I port my number to you, or do you point at my carrier? If the answer is vague, it’s porting.
- Whose account holds the number afterwards? Yours or theirs.
- How do I turn this off? A switch, or a support ticket and a cutover.
- How long until it’s answering calls? Minutes and weeks are both real answers, and they tell you which model you’re in.
If you want the click-by-click version for a specific carrier, the setup guides for Telnyx, Twilio, and generic SIP trunks walk through every screen.
Keep your number. Change what happens when it rings. Rindee answers every call in your business’s name and books the appointment while the caller is still on the line — see how it works.