IP landline phone & Hide number

An IP telephone is connected to your Internet connection (Voice over IP) instead of the telephone socket. This gives you many advantages: crystal-clear HD voice quality, wireless flexibility via WLAN or DECT and the option of using several phone numbers simultaneously on your landline.

Connect fixed-line telephone
Hide number
Set up additional phone numbers
Make internal calls
FAQs

Connect fixed-line telephone

Find out how to connect your landline phone to the Internet Box instead of the telephone socket. Which device would you like to connect?

HD-Phones from Swisscom

When you use your wireless HD-Phone for the first time, the telephone display shows that you should press the + button (= pairing button/connection button) on the Internet-Box. When you do this, the HD-Phone connects automatically.

Alternatively, you can also set up the connection via the menu. To do this, follow the device instructions.

Analogue fixed-network telephone

You can also connect analogue fixed-line and cordless telephones with their own DECT base station to the Internet-Box. To do this, use the port labelled “Phone” on your Internet-Box.

What if the connection isn’t established? Change the dialling method to “Frequency dialling” in the settings.

You can also find further information in the device instructions.

You can continue using older analogue fixed-network telephones that are not IP-enabled. However, some functions will no longer be possible.

SIP telephone from other providers

You can also use your Swisscom fixed-network number with a SIP-enabled telephone from another provider. To do this, use your SIP credentials or set up local IP telephony.

SIP credentials

Local IP telephony

Hide number

Are you calling someone and don't want your number to be displayed? Simply hide your number - for all or individual calls.

Hide phone number

Enter the following key combination on your fixed-network phone: *31 followed by the telephone number.

Hiding a mobile number

Hide for all calls: *31#

Deactivate hiding: #31#

Set up additional phone numbers

First order an additional landline number in My Swisscom (Manage products and services > Telephony > Options). Then set up the number on the device:

Internet-Box

Make sure you are connected to your home WLAN.

Enter the address http://internetbox.swisscom.ch or 192.168.1.1 in your Internet browser and log in.
Go to Telephony Settings.
For an “Outgoing call”, specify which phone number is to be displayed when you call a person.
For an “Incoming call”, specify which phone number rings on which device.
Click on “Save”.

Centro Business

Go to My Swisscom(opens in new tab) Devices Manage devices.
Set up which telephone number should ring on which device.

If your handset is logged into Centro Business 2.0, or Centro Business 3.0 via IP BASE COMFORT, you can do this on the handset itself.

IP telephone from Swisscom

In My Swisscom(opens in new tab), go to Device Overview.
Set up which telephone number should ring on which device.

IP telephone from other providers

Use your SIP credentials or set up local IP telephony.

SIP credentials

Local IP telephony

Private individuals can use two numbers, business customers up to five. Need more phone numbers? Contact us.

Make internal calls

If you have two or more fixed-network telephones (HD-Phones) connected to the Internet-Box, you can make free calls from one to another or forward calls.

Internal calls

Simply allocate short numbers to the devices in the web portal (http://internetbox.swisscom.ch or 192.168.1.1). You can then dial the short numbers to call another fixed network device internally.
Internal forwarding is possible only from one HD-Phone to another HD-Phone or to a telephone that is connected to phone port 1 or 2 on the Internet-Box.
The same also works with Centro Business. However, an additional phone number is needed in inOne SME for forwarding to an IP telephone (e.g. Yealink T46S).

Forwarding calls internally

Here’s how to forward an external call to another device internally:

During the call, go to Menu Options Forward. Depending on the model, you can also use “New call”, “Internal call” or the INT button (if available).
Select the other device or dial the internal short number directly.
Wait until the other person picks up the call.
Go back to Menu Options Forward. Depending on the model, you can also use “Connect” or “Forward call”.
The call is then transferred. You can then hang up.

FAQs

I cannot make or receive calls. What can I do?

Check whether the battery of your handset is charged, the router is switched on and the LED light of the Internet Box is white. If the problem persists, please contact our support team.

Why does my landline phone display some calls anonymously?

If someone actively suppresses their number or the number is not saved in your phonebook, no name can be displayed

Can a suppressed number be traced?

Yes, in the case of abusive or harassing calls, the police and network operators (such as Swisscom) can trace the number despite suppression in the system. The suppression only applies to the display of the person called.