Gigaset CL660HX HD-Phone

On this page:
Find out more about the operation, keys and functions of the Gigaset CL660HX HD-Phone and how to set it up and use it.

Device and buttons

Find out about the device and the HD-Phone buttons in the button overview. Residential customers need an Internet-Box and fixed-line access (IP) to use the Gigaset CL660HX. Business customers need the Centro Business 2.0 or Internet-Box 3 and Business Telephony connection.

Internet Box Light

Set up and use

Help topics & tips HD Phone Gigaset CL660HX

Instructions, documents and firmware


In diesem Video zeigt Oliver, Trainer bei Swisscom Academy, den Lieferumfang der Internet-Box 4 und erklärt dir wie man diese Installiert.

Frequently asked questions

Before you press the + key (pairing key/connection key) on the Internet-Box (base station), start the automatic DECT registration process as follows:

  1. On your telephone, select: Menu – Settings – Registration – Register Handset - OK
  2. Now press the + key on the Internet-Box


The two devices will show a successful connection on their displays.

You can configure settings directly on your handset to forward calls or reject calls you do not wish to take. Proceed as follows:

  1. Menu
  2. Network services
  3. Options
  4. Scroll down and set up service (call forwarding, reject unknown calls etc.) > OK


The following Swisscom services are available:

Forward Divert incoming calls to another telephone number
Do not disturb Divert all incoming calls to a message
Block anonymous calls Divert all calls with suppressed telephone number to a message
Call barring Enter the telephone number of the last call in a black list.
Calls with this telephone number are no longer diverted to the handset.

Help from the Swisscom Community

Couldn't find an answer? Ask the Swisscom Community. More than 10,000 active users are waiting to help you.