Is there also a firewall for telephone products?

No. A firewall would need to be installed by your local IT service provider.

The telephone is no longer working. What do I need to do?

1. Are all telephones affected by this disruption?
Yes: continue with point 3
No: continue with point 2

2. Disconnect the affected telephone from the mains and then connect it again, so that the device can restart.
Problem resolved: done.
Problem not resolved: continue with point 3

3. Check the Internet connection (download instructions here).

4. Contact support on 0800 678 105. You will find the number for technical support and your customer number on your bill.

What are “INA tariff classes”?

These are premium rate numbers that are listed separately and are not included in any flat rate.

Telephony Devices

Where are the telephone sets connected?

With the service Digital Phone the customer is supplied with a converter (Cisco ATA-Box 191), which is connected directly to the modem (with dynamic IP address) or behind the customer’s firewall (with fixed IP addresses). There the telephone terminals are connected.

Which manufacturers offer compatible telephones?

Digital Phone

Can I also use this solution as a fax?

Yes, with the web fax function, you can send fax messages as a PDF and receive messages by e-mail without the need for a fax machine.

Can I transfer incoming calls internally?

Yes, this is possible with Digital Phone.

Can I benefit from flatrates?

The SME Kombi version includes Flatrate Swiss (free calls to Swiss landline).
The SME Combi version includes the Flatrate Global (free landline calls from 34 countries including Switzerland).
The Basic versions do not contain a flat rate d. H. Here the cheap business tariff is charged.

Can I install an answering machine?

Yes, you receive your mailbox messages by e-mail.

How good is the voice quality?

Digital Phone is based on the VoIP technology which runs over the internet. Due to the preferred handling of the “voice packets” in the network, the voice quality is the same as with a conventional telephone connection.

How many telephone lines/numbers are available to me?

  • - With Business Voice Digital Phone, two analogue lines/numbers are available.

  • - With Business Voice Digital Phone, up to nine lines/numbers are available.

What happens to the telephone service if my Internet connection is interrupted?

As long as you have stored a mobile number in the voice portal for the event that the telephone sets cannot be reached, all incoming calls will be forwarded automatically to this mobile number.

What kind of phones do I need for Business Digital Phone?

You can use the Business Digital Phone service with conventional analogue telephone devices.

Analogue telephone / ISDN

Are number ranges (DDI) also possible?

In the SME segment, number ranges are rather unusual for customers that are ported by Swisscom Ltd. A DDI block requires a PBX. ISDNs with a DDI number block cannot be transferred as VTA.

As a customer, can I stop calls from being made via the UPC telephone network?

It is possible to avoid making the calls with UPC. This might be useful in the event of a fault. You must prefix the telephone number with the code 10741 (Swisscom).

Can I check the preselection transfer?

Just call 0868 868 868. You will be given the name of the current provider.

Can I order a VTA now as a UPC Business customer and later port the numbers to UPC Business (e.g. for a Virtual PBX solution)?

That would indeed be advisable: if you are currently using VTA telephony as a customer, you will immediately benefit from the favourable call tariffs offered by UPC Business.

How do I proceed if I require additional connections for VTA as a customer?

An appropriate order has to be placed with Swisscom Ltd for additional connections. UPC Business can do this on your behalf. As soon as the connections are active, numbers can be preselected and local loop service billing (VTA) can be activated.

The VTA offering from Swisscom Ltd includes primary connections (PRI). Are these also provided by UPC Business?

The PRI primary connections are available in our department for corporate customers. They are not offered in the SME segment.

What does the abbreviation VTA stand for?

VTA is a Swisscom Ltd term and means “local loop service billing”. The contract is concluded between the end customer and Swisscom Ltd. Billing for the connection and traffic is handled by UPC Business. This includes analogue telephone connections and ISDN connections.

What if I have already installed Swisscom Ltd connections as a customer?

That is not a problem. You can order VTA from UPC Business and benefit from being billed by us and from the lower call charges.

When do I require analogue connections as a customer?

You need an analogue connection to use a traditional fax machine. These devices require relatively old technology to work reliably and without disruption. So an analogue connection is recommended to enable fax machines to run smoothly. A fax machine cannot be relied upon to run smoothly if you use it via VoIP (Voice over IP / Internet telephone).

There are also data services such as alarm systems, pay terminals, postage machines, etc. that are run using analogue connections. These connections should normally be left as they are and not be migrated to VoIP.

When do you refer to VTA and when do you refer to Business Voice Analog/ISDN?

VTA is the Swisscom Ltd term for charging the participant connection. Business Voice Analog/ISDN is the name for UPC Business products that use VTA.

Call number porting

Can I keep my telephone numbers?

Yes, you can bring your current telephone numbers with you to UPC. Once you have placed your order, you will receive a porting form which enables us to cancel your existing telephone connection and to port the call numbers.

How do I apply for call number porting?

You can download step by step instructions here.

What is the porting process?

You can download an overview of the porting process here.


Are there detailed instructions for the voice portal?

Our comprehensive user manual provides detailed instructions (download here).

Any other questions?

Contact us directly.

Product Advice

Mo-Fr: 08-12 & 13-17 h

0800 900 290

Administrative Support

Mo-Fr: 08-12 & 13-17 h

0800 568 568

Technical Support

24h per day

0800 008 007

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