For connecting your local traditional ISDN telephone systems, both basic connections (BRI, connection with 2 voice channels) as well as primary connections (PI, connection with 30 voice channels) are supported. IP telephone systems can be connected directly to the multifunctional data connection and support voice and fax functionality.

Best voice quality thanks to prioritisation of the voice packets

Connection possible via an individual, dedicated VPN line

Leading Swiss VoIP provider with over 15 years of experience

Your advantages

Connect your ISDN system or IP telephone system to the telephone

network and benefit from the various possibilities offered by VoIP.

Simply take your telephone numbers with you

Of course, UPC Business will port your telephone numbers or provide you with new number ranges from its inventory.


Thanks to our intuitive customer portal, you can make changes (site expansions, staff changes and access rights) quickly and simply.

Certified telephone systems from UPC

UPC has certified the commonly available IP telephone systems so as to ensure the smooth interoperation of their communication capabilities.

Renowned manufacturer of terminals

Thanks to our partnership with Panasonic you are provided with a tailor-made communications solution with the guarantee of a reliable manufacturer and the specialist knowledge and expertise of UPC Business.

ISDN-PBX/IP-PBX with Premium Option


Includes basic package

Premium Option

Access to customer portal (mybusiness)

Number porting

Voice packet prioritisation

Proactive monitoring of the connection/remote maintenance

CLIP special arrangement (number display)

AOC via ISDN (charge display)

Dedicated, private IP/VPN access

Individual set-up of backup/emergency routing scenarios

Connection does not require a firewall

Microsoft Teams

Collaboration and availability – anywhere and on any device.

Microsoft Teams enables location- and device-independent real-time collaboration on the Microsoft cloud platform. Sunrise UPC Business connects Microsoft’s cloud-based telephone system to the public telephone network (PSTN) without additional customer hardware and ensures top voice quality. We support you with soft migration so your existing systems can continue to be used.

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Skype for Business

We are a certified Microsoft partner

Skype for Business allows you to connect to the public switched telephone network (PSTN) directly via SIP, offering your a flexible, universal communications solution. UPC Business helps companies to connect their Skype for Business infrastructure to an external PSTN network. Skype for Business offers the most reliable, cost-efficient PSTN connectivity with a SIP trunk provider.

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Why is Business Voice Virtual PBX from UPC Business so cheap, and what is the difference compared to a conventional fixed network connection?

Virtual PBX from UPC Business allows you to run your telephone via your Internet connection. So you can circumvent the traditional domestic connection. The Virtual PBX connection is based on a Business Internet Fiber Power connection, which is why it can be offered so cheaply.

Does Virtual PBX by UPC Business work with a conventional telephone device?

Conventional telephone devices (analogue or ISDN) can no longer be used. You require IP-enabled telephone devices (SIP telephones) for a Virtual PBX connection. You will be given the option of choosing from various models during the order process. Our installation partner will configure all the devices during the on-site installation.

Do I need a PC to use Virtual PBX by UPC Business?

No, that is not automatically necessary unless you use a softphone that is installed on your PC. Virtual PBX allows you to dial any telephone in the world with your IP phone, without needing a PC. You can also be called from any connection in the world at any time.

How can I make calls with Virtual PBX by UPC Business?

You need a Business Internet Fiber Power connection with a bandwidth of 200/20 Mbit/s, 500/50 Mbit/s or 1000/1000 Mbit/s.

How can I use Virtual PBX by UPC Business for my company?

Virtual PBX from UPC Business allows you to replace your existing physical telephone system with what is known as a cloud solution. This means you are using a virtual and outsourced modern telephone solution. As long as you have an efficient Internet connection, this provides you with global access to the telephone system wherever you are. You can also use the telephone system when you are on the move or abroad with your mobile phone (via app) or from a PC/laptop (via web portal) – just as if you were physically present in your office. Virtual PBX saves on investment in expensive hardware and has the advantage of lower call costs. Within your organisation all participants can call each other for free, even between company locations.

Is the call quality as good as with traditional telephony?

Yes, Virtual PBX by UPC Business allows you to make calls with the call quality you would usually expect. To ensure this quality, voice transfer is prioritised over the other data packages (quality of service – QOS).

Would you like to have an

individual consultation?

Contact our experts: