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Residential VoIP application.

IP Telephony (SIP — Session Initiation Protocol)
Swiss VoIP by PhoneWorld

PhoneWorld converts your landlines and Mobile to VoIP.

Future technology

The change to IP telecommunication infrastructure is gradually taking place worldwide.

Switzerland is modernizing its telephone system by going all IP. Traditional landline (analog & ISDN) has reached the end of its service time. An all-IP system provides the technical basis for the digitization of communication within Switzerland and thus secures the country as a future-oriented, attractive business location.

Needless to say, there are no alternatives and customers have no options other than to update their current systems to allow Voice over IP (VoIP).


Note: PhoneWorld VoIP completely eliminates the cost of international roaming charges via the IPCall App.

No geographical boundary

The VoIP service area becomes virtualized without geographical limit. That is, the area code or country code is no longer bound to a specific location. For example, you could travel to Australia and use your Swiss VoIP number down-under. The calls from Australia become in fact domestic Swiss calls, even though you are physically in Australia.

Service mobility

Wherever the phone goes, the same services are available: call features, voicemail access, call logs, security features, service policy, etc. All you need is internet access.

Integration and collaboration with other applications

VoIP protocols run on the application layer and are able to integrate or collaborate with other applications such as e-mail, web browser, instant messenger and social-networking applications.  This integration and collaboration creates synergies and provides valuable services to end users. Typical examples are voicemail delivery via email, click-to-call service on a website, voice call button on an email, etc.

Phone portability

Legacy phone systems (analog & ISDN) assigned dedicated phone numbers which often had to be changed after moving. However, VoIP numbers provide total mobility. VoIP numbers go with you as long as you have an Internet connection. This is especially convenient and cost effective for international travellers using the IPCall Mobile app.

Number transfer (Porting)

VoIP customers can take their current analog/ISDN numbers along.  Conventional telephone numbers can be easily ported to the new VoIP technology. Therefore, there is no change in your current phone number vis-a-vis third parties.

Mobile numbers cannot be ported into the VoIP system. Only landline numbers can be ported (PhoneWorld, Swisscom, Sunrise, etc.).

Watching Television under VoIP

There is no need to subscribe to expensive TV subscription packages which is offered by carriers and cable operators.
One of the most cost efficient ways to watch programs on your TV, PC, tablet or smartphone is Zattoo.

Call the World with a Mobile App

PhoneWorld is providing an "IPCall Mobile" application which can be downloaded on your Swiss mobile phone (Swisscom, Sunrise, Salt, TalkTalk, etc.).  The new app provides you with the opportunity to call domestic and worldwide at the same low VoIP landline rates. Further, with a PhoneWorld VoIP connection the IPCall Mobile app allows you to receive and make calls from anywhere in the world and benefit from local Swiss pricing.  There is no charge for VoIP calls between network members, whether using landline or mobile phones.

Screenshot of the IPCall Mobile Dialling Template

IPCall IPCall on an iPhone

All incoming calls to your registered landline phone will also be received on your mobile via the app.

In a larger office environment this also means you have to link your DID number (direct inward dial) to your mobile phone number. Via settings, you can turn 'Push Notifications' "off". Thus the mobile phone ringing will stop.

How to get a PhoneWorld IPCall app:

Your first step to get an IPCall app onto your smartphone

The mobile application for home, at the office or on the move:
With our IPCall application, any call to your landline will ring through to your mobile, wherever you are in the world. Consider your mobile becoming an extension of your landline for making or receiving calls worldwide. Your recipient will see your landline phone number when you call from the IPCall app.

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(For all smartphones and networks)

Carefully follow these instructions to install the PhoneWorld IPCall app on your smartphone:

  1. Email application form to ipcall@phoneworld.com
  2. PhoneWorld will send you a QR code (quick response code) by e-mail.  Keep the QR code open on your desktop computer screen
  3. Search for Nexphone IPCall app in Google on your smartphone, choose either iPhone or Android
  4. Download and install the IPCall app on your smartphone
  5. Open the IPCall app.  Point the camera of your mobile phone toward your desktop computer screen displaying the QR code
  6. The IPCall app will recognize your QR code and complete the installation and configuration (auto log-in).
  7. You are ready to make your first call


  • A QR code can only be used once. Ask for a new code if needed
  • Since data rates are substantially below normal voice rates, you may want to consider making all domestic/international mobile calls using the IPCall app
  • Files or images cannot be sent with the IPCall app

Consider the PhoneWorld IPCall service an extension of a Swiss landline. Make and receive calls from anywhere in the world and benefit from low Swiss landline prices. IP calling is cost effective. It eliminates all roaming charges. You can even record your conversations.

Other Information

  • You can make and receive calls with the IPCall app from/to anywhere in the world
  • The lowest cost use of the IPCall app is when connected to a Wi-Fi network (WLAN)
  • Regardless of your worldwide location all calls are made as if they were local calls from Switzerland
  • If you are not connected to Wi-Fi it still pays to make calls via the IPCall app since data is cheaper than voice, and there are no roaming charges
  • If you receive a call to your IPCall phone number when you are away from home, you will still receive the call. The system will re-route the call automatically via normal 4G networks and you will pay only for data usage.
  • Avoid additional ring tones when in home or office by turning off push notifications in settings

Security: The IP call mobile system is based on a Swiss landline connection. It is exactly the same as if you were using your home/office fixnet. Thus itis NOT an unsecured connection like experienced with social media or most other IP dialing systems.

Download this section as a PDF document


  Contact: connect@phoneworld.com

How to transfer a business line to VoIP

Corporate VoIP sign-up form

Authorization form to transfer and port your current landline to PhoneWorld VoIP...
(VoIP Application: English - French).
Please complete and sign this form, then scan and email to connect@phoneworld.com.

Upon receipt, PhoneWorld will contact you to establish technical requirements (adaptation to VoIP).


How to transfer a residential line to VoIP

Residences and home offices are equally affected by the move to VoIP. PhoneWorld has the technology to migrate your phone to VoIP via providing a special voice/data modem (VDSL or fiber optic). The new technology also allows PhoneWorld residential customers to make calls on their mobile phone (any smart phone) via an IPCall application as outlined above.

Frequently asked questions (FAQ)

How to connect a residential VoIP: English | French

Application - Residential/Home Offices

Corporate VoIP sign-up form

Authorization form to transfer and port your current landline to PhoneWorld VoIP.
Please complete and sign this form, then scan and email to connect@phoneworld.com.


* Definition: WLAN means any wireless local area network no matter what technology is used. Wi-Fi is a type of WLAN that follows the IEEE 802.11 standards
  which most WLANs use today. That's why they are commonly used interchangeably. Wi-Fi as a name for the standard is a trademark of the Wi-Fi Alliance.