If you have a phone number registered with Belfabriek, you can configure how you want to receive calls. For example, do you want your mobile phone to always ring when a call comes in, even if the app isn’t open? That’s possible: just provide us with your mobile phone number, and we’ll forward all incoming calls to your mobile phone.

We can also play a pre-announcement tone so that when you answer your mobile phone, you’ll know it’s a business call coming in.

Easily Separate Business and Personal Calls

This way, you can easily separate business and personal calls on one mobile phone. You’ll have both a business phone number and a private mobile number on one device. In other words: landline on mobile.

We forward calls directly to your mobile. You don’t need to install an app to receive these calls. We create routing in our telecom switches, sending incoming calls directly back to the telephony network to mobile operators via our interconnection with these parties. While this costs us more, it ensures the best call quality. Billions of euros have been invested in mobile networks and technology to wake up a sleeping phone in your pocket when a call comes in via the towers. We’re happy to deliver calls to your mobile via this official interconnection, ensuring you never miss a call.

Delivery via a Softphone

Another way to deliver calls to your mobile is via a softphone, a piece of software you install on your mobile phone that waits for a command (“there’s an incoming call”) and then starts up. A connection is then established over the Internet to your mobile phone, and the call is conducted this way.

The call is not handled through the mobile operators’ network, saving the interconnection fees for handling a mobile call. Instead, the call becomes data packets sent back and forth. Mobile networks see this as data, not voice, and this traffic is counted against your data bundle (check if you have unlimited data in your voice plan; otherwise, you’ll still pay for this call, which might seem cheaper).

Disadvantages of Voice Over Data Traffic

However, there’s a big caveat… You can transport voice over the Internet, and it works well over fixed Internet connections, between office locations, and home locations. But a voice connection between a landline and a mobile phone or between two mobile phones over the mobile network remains challenging.

That’s why mobile networks distinguish between voice traffic (billed in minutes and routed through your mobile number) and data traffic (billed in gigabytes).

Voice traffic is prioritized and handled in a special way over mobile networks. It’s always more expensive than a regular Internet package. Why? Because voice is more sensitive. You don’t want echoes, interruptions, delays, and you want your phone to always ring when a call comes in!

Now you’ve read about mobile interconnection fees, voice, and data traffic, and you know that voice requires more attention and prioritization in networks. Your mobile phone hardware also responds to mobile networks. When a major player like Vodafone or T-Mobile activates or expands a mobile network, they only use equipment that’s fine-tuned for all mobile devices. It’s a fully integrated system, and mobile phones work seamlessly.

Voice Over Internet to Your Mobile Phone: Here’s How It Works

Over the years, startups have tried to reinvent telephony or make it cheaper. How? By developing apps to receive incoming calls. However, this setup will never provide the same quality and reliability as delivering voice to a mobile phone via the mobile operators’ voice network. And now you know why: voice is just a bit more special than data, requiring more expertise and higher costs.

On the other hand, imagine everyone installs an app on their mobile phone to receive calls via the mobile operators’ data network. This would save millions, if not billions, in interconnection fees! Unfortunately, this doesn’t work. Why not?

The main reason is that apps become inactive after a certain time. They go into sleep mode to save your phone’s battery. If you haven’t opened the app at all, it won’t work.

That’s (in short) why delivering calls reliably to your mobile phone doesn’t work well. Never.

A mobile phone needs to last as long as possible on a single charge. Users want to charge their phones overnight and have a full battery that lasts all day. And that’s not possible if your phone stays active all day with the app running. So the app goes into sleep mode after a while or doesn’t work at all if you haven’t opened it daily.

There are workarounds, and there are even official protocols to wake up apps or bring them out of sleep mode remotely. But: it’s never as reliable as the official route of delivering a call via the mobile interconnection to your mobile phone. There are always moments when your app doesn’t start or starts too late. You can never be 100% sure. The status of your mobile phone is also important: is it in lock mode?

Read more at Apple or on the Reddit forum Voip Push Not Received

You can also Google: Voip App Does Not Wake Up On Call

You’ll often read good reviews about services delivering calls via apps. Keep in mind: when people test a service, they have the app open, and it works 99% of the time. It’s only after a day or two that issues arise. And how do you know you missed a call? The caller probably won’t try again or email you.

About the Belfabriek Softphone

Belfabriek also has a softphone, and a good one, which works on both mobile and computer. It includes all protocols (CallKit Apple) and push notifications to make it work. However, our softphones are primarily used on computers (you can use a headset and need the desk phone more) and not often on mobile phones. Or the softphone is used for outgoing calls with your business phone number. Yes, that always works well.

Reliable Landline to Mobile Solution for Everyone

We can’t think of an industry or profession where the customer says: I want a landline to mobile solution, and it’s okay if I occasionally miss a call. Perhaps a festival organizer expecting high traffic over two days, working with volunteers using mobile phones and having no budget. If a caller doesn’t get through, the connection is poor, or they have to call again, it’s not a problem.

But for veterinarians, nail salons, painters, and other self-employed professionals who value every call and expect them to come through: it’s good to know that Belfabriek forwards every landline to mobile call the official way, via its own interconnection to mobile operators!

Register your own 085 number or landline number now and have your calls perfectly forwarded to your mobile! Without interruptions! And with features like call recording, a menu, or welcome message!