☎️ They told us we needed a landline ☎️

Landlines – an antiquated telephone that is often unused but kept around for legacy reasons.

I cannot remember the last time I used a landline telephone. It was probably more than three years ago. Growing up with a mobile connection has made landlines a thing of the past for younger generations.

Throughout university the only thing a student uses is a cell phone. However, once a student moves into their first place where they need to set up internet, this long-forgotten option suddenly reappears. As it did for me when I recently moved to an apartment in London. When setting up our internet we didn’t consider getting a landline. Really, why would we?

Then, after living at our new place for a few days, it hit us. We couldn’t figure out how the doorbell worked. There was no built-in intercom, so there was nothing that would make a sound when someone downstairs typed our flat number into the system and pressed ‘call’. Bewildered, we ventured to find out more and were told “well, we need your landline number to link it to.”

They said it in a way that assumed we must have a landline. Of course, when these systems were built virtually everyone had a landline.

When getting the internet set up, they told us that adding a landline would be an additional £15 a month. So we were to pay £180 for 12 months. A high price for some antiquated technology that we would use for one purpose only: the occasional visitor who does not know the code for the gate.

Since we are hackers, we decided we would not have some old-fashioned hardware forced on us. If we were to have outdated hardware at our new home, we would do it our way.

In the UK, landline phone numbers are different from cell phone numbers. Luckily, Twilio in the UK offers local phone numbers. These are numbers that are assigned to a specific region.

We filtered the UK numbers Twilio offers and bought a number matching London’s region code (020). After buying the number, we went to the Developer Center and created a new TwiML Bin within the Twilio Console.

Here we added the following code:

This forwards any incoming call to the Twilio number to another number which is specified in the TwiML Bin.


After connecting the doorbell to the Twilio number, we temporarily had the TwiML Bin set to forward calls to one of our phones. This lead to a few awkward situations. One poor delivery driver rung the bell, we picked up and then had to tell him that we weren’t actually home, even though we had ‘answered’ the doorbell.

The other issue I had was that I keep my phone silenced almost always. Even when at home there are occasions when I miss phone calls. In this case that would mean not hearing ‘the bell’ even though I was home!

This is when I realized the beauty of a ‘landline’ phone – or rather – of a designated phone that indicates you are at home and is loud at all times.

Out of a sense of nostalgia, I had recently browsed eBay for a Sony Ericsson w810i, a former loyal companion and my first real multimedia phone when I was a teenager. After ordering it and a pay as you go SIM card, I set up our new-old mobile landline phone and changed the TwiML code to forward calls to that.

Personally, I decided for a dedicated phone for the bell. You could however also set it up to call you on your mobile if you weren’t home – it could even call your entire family simultaneously!

This way, you could remotely talk to the people at your door. For this you can use the above TwiML Bin which will first try calling a primary phone. Then, if no one picks up it will call both backup phones simultaneously!

Overall, this setup is as functional as a landline phone. Yet this Twilio-serviced ‘landline’ phone saves us quite a bit. We have yet to find something that requires us to make outbound calls from a landline number. However, if we did need this functionality we could also build this with Twilio.

The reason I am telling you this story is because you may know somebody in a similar situation. Or you may be in a similar situation yourself at some point. If you do find yourself in that situation where a landline provider tries to sell their services to you tell them you don’t live in the 1920s.

If you have any questions about this or about how to overhaul other outdated services (like fax), feel free to reach out to me on Twitter @naomi_pen. If you build your own Twilio-serviced old-new mobile-landline, I would love to see pictures of your setup!

  • Paul Conroy

    Here in the US you do need a local landline to call Emergency Services 911 – can you solve that problem?

  • Stacy David

    Great read. As another option, but it requires more configuration, a person can setup a Twilio SIP Domain user with a SIP device (about $35 US dollars). A regular landline phone plugs into it and you get dial tone.

    • Sergey Filippov

      Hey Stacy, I’m trying to do exactly that! Could you please advise on which SIP device I should use? Thanks!

      • Stacy David

        I’m using the Cisco SPA112 SIP device. $30 on newegg.com. A colleague also recommended the Obihai OBi200 VoIP Telephone Adapter. Let me know if you need the set up steps.

        • Sergey Filippov

          Thanks for your reply! I was reading about Cisco SPA112 and couldn’t figure out if it can be provisioned with Twilio SIP trunk and work directly over Internet or it requires PBX device on the same network. If you could briefly describe your setup that would be amazing!

          • http://tigerfarmpress.com Stacy David

            Clarification: the Twilio SIP Trunking service does require a PBX. I used the Cisco SPA112 with the Twilio SIP Domain service which is does not require a PBX device. Component to configure using the Twilio Console: Voice SIP Domain credential list, a SIP Domain which uses a program to make outgoing calls, a TwiML Bin for incoming calls which is used to configure your Twilio phone number. We have free Onboarding support, where you can ask for my specific configurations.