netvoip landline
Prepaid and Talk Subscriptions

FAQ (frequently asked question) landline

To get a netvoip phone connection up and running as quickly as possible, all you need to do is register on the netvoip portal and order the required device (phone or adapter) from our shop. The whole process incl. shipping the phone takes about 5 working days. If you download the software client, you can even make calls with netvoip just a few minutes after registering.

Installing the phone is very simple and does not require any special computer or network knowledge, as our devices are delivered already pre-configured.

There are no monthly fees for netvoip Prepaid. For netvoip Prepaid Plus the monthly fee (per phone number) is CHF 5.00.

Please note that you must have credit on the netvoip Prepaid account to make incoming and outgoing calls. No calls are possible with a credit of CHF 0.00.

Analogue phones can also be used for netvoip if they are connected with an appropriate adapter. You can choose from a tested device in our shop.

With netvoip you can make calls via any broadband internet connection.

With a stable internet connection, there is practically no difference in reliability compared to conventional analogue and ISDN telephony. Our systems meet the highest standards in terms of stability and quality.

Yes – netvoip supports all common protocols. So you can simply use your current VoIP phone. All netvoip configuration details are visible in your user account.

netvoip supports all common functions of conventional landline connections such as fax, DTMF tones, CLIP, forwarding, redirection and much more.

If you have a VoIP adapter that supports ISDN devices, this can be used with netvoip. However, there is currently no hardware available in our shop that is compatible with ISDN devices.

Yes, with netvoip Prepaid you can manage up to 3 phone numbers per account. If you need more than 3 numbers, you can switch to the monthly subscription netvoip Talk, which offers additional features.

If you have several accounts and would like to merge them into one account, our support team will be happy to help you.

Send us the user names of the accounts you want to merge via the contact form at and note which user name should function as the main account in the future. With netvoip Prepaid you can manage up to 3 phone numbers per account.



Yes, of course you can port your phone number to netvoip. You can find the number portability forms here:
Power of attorney for netvoip Prepaid only
Power of attorney for netvoip services with landline number/s 

When you go travelling in the future, your phone connection will come with you. No matter where you are in the world: All you need to do is plug your computer or your netvoip adapter into a broadband connection and you’ll be making calls to Switzerland at local rates. Alternatively, you can also use your smartphone and a VoIP app to make calls with netvoip via a WLAN. Of course, you can also receive calls abroad without your call partner noticing that you are not in Switzerland but on the other side of the world.

Thanks to our own switching, you have advantages with netvoip that you have to do without with most other providers. Vital short numbers (e.g. 117, 118, 144) are just as accessible as business numbers (e.g. 0800, 0848, 0844).

Unfortunately, it can happen that phone numbers of netvoip AG as well as our partners and customers are misused by so-called “spoofing”.

The term “Call ID Spoofing” refers to the method by which calls can be made under a calling number that is simulated for the called party. Most such calls with a stolen number originate from abroad. The calls are routed through various systems, in certain cases also through phone systems of private or business customers.

If you receive repeated calls through “Call ID Spoofing”, it is possible for you to file a criminal complaint with the competent criminal authorities or a civil complaint with the competent civil judge. The criminal complaint can be deposited at any police station.

SIP stands for Session Initial Protocol and is the protocol most commonly used on the Internet for transmitting voice.

You can access your own voicemail directly from your VoIP device. Dial *98 to be redirected to the voicemail menu. When you call up the voicebox menu, you will first be asked for your voicemail-PIN which is set when you activate your voicebox in the netvoip portal.

SIP: 5060
RTP: 35000-65000

With netvoip, the following codecs are supported for calls to landlines and mobiles: G.711a-law, G.711 u-law

HD Voice enables a very high quality voice quality, this is realised by means of the g.722 voice codec.

This codec can be used between netvoip customers, but not with callers from external networks, as these calls go via the classic phone network. The g.711 codec is used by default.

The selection of the voice codec is controlled by the telephone or software client of the caller. Depending on the end device or software, different preferred voice codecs can be selected. We refer you to the manufacturer’s support for this.

Your passwords are not transmitted in plain text in the signalling but via encrypted hash. Calls via SIP / RTP are transmitted unencrypted. By splitting and transmitting the individual voice packets, eavesdropping on the conversation is very unlikely.

Unwanted callers can be blocked in the my netvoip portal. This feature is enabled for netvoip Talk and netvoip Prepaid Plus subsciptions.

Swiss phone numbers are entered in national format. International phone number are entered in International format with country code 00. Anonymous calls can not be blocked.
The percent symbol ( % ) can be used as wildcard to block e.g. number blocks. The entry 044123% blocks all callers that come in with a phone number starting with 044123.
Allowed characters: Digits 0 to 9 and %

If the option is activated, only calls to the following countries are possible:

Andorra, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France , Gibraltar, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, Vatican City.

If the option “Calls abroad” is activated, only calls to Swiss numbers are possible.

Since the amendment of the Telecommunications Act as of 01.01.2021, blocking these advertising calls has been a major issue. As a telecommunications service provider, we are obliged to operate a technically suitable solution to prevent these calls. However, each provider can currently decide for itself what this solution looks like. Currently, many of the large providers work with dynamic block lists, which are filled with new phone numbers based on evaluations of the call statistics. In principle, this is a sensible approach, but there are several problems.

1. There are different providers of these block lists. This means that no one can say exactly which numbers are blocked and which are not. This means that no one is really responsible.

2. If you end up on these block lists with your own number, there are no efficient processes for getting off the list. We have already had various major customers (including banks, insurance companies, etc.) whose main number was no longer accessible from Swisscom and Co. The problem could only be solved after several weeks.

3. Call centres are constantly using new number ranges. This leads to the fact that the block lists in fact only block reactively. Often, numbers are already no longer in use when they land on the block lists. Our strategy in this respect is that we currently only block very clear spamming. We do not currently want to use a list from a third-party provider because we generally assume that our customers (especially business customers) would rather receive one call too many than one call too few. If the burden of calls is so great, then replacing your telephone number will help at best. We hope that in the coming months and years there will be more efforts in the market to solve the problem globally.

Yes, this is possible. You can register up to 5 VoIP-devices per phone number

Voicemail messages are deleted from the server after 30 days.

You can top up your netvoip prepaid account quickly and easily using the following payment methods: Postfinance e-finance, PayPal, TWINT, credit card.

If you are unable to top up the credit via the payment methods, you can transfer the credit to our bank account via bank transfer. In order for us to be able to allocate the bank transfer, please provide us with the following details via the netvoip contact form:

– Name bank account holder
– Value date
– Amount
– netvoip prepaid username

The payment will be credited to the netvoip Prepaid account within 5 working days.

Bank details netvoip AG, Alpenstrasse 1, CH-8803 Rüschlikon:

Raiffeisen Switzerland Genossenschaft, CH-9001 St. Gallen
Account: 01-76492-4
IBAN: CH15 8080 8003 5471 3676 8

In addition to our prepaid solution, you will also find VoIP offers on which you can pay conveniently by monthly bill.

For data protection reasons, all connection information is deleted after 6 months.

As with many providers, for technical reasons we can only identify mobile providers on the basis of the 076, 078 or 079 prefix. For example, if you have a 076 number from Sunrise and later switch to another provider, you will still be charged a Sunrise-Mobil tariff.

After a payment has been made via the post office (e-finance), it takes around 3 days for the payment to be processed and forwarded to us.

The prerequisite for a PayPal top-up is a validated Swiss PayPal account. This is because when you open a PayPal account, you have an initial sending limit. After reaching the sending limit or in certain cases when using your PayPal account, you will be asked to link and validate your credit card or become a verified PayPal member before you can send further payments with PayPal. This validation of your PayPal account is only possible with a credit card.

If you have previously topped up your PayPal account by bank transfer, we recommend that you switch to another payment method for netvoip. The following payment options are available:

– Postfinance E-Finance (Postcard)
– Twint

The limit per transaction is CHF 999.00.

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