Gigaset Comfort 551HX HD-Phone 

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Find out more about the operation, keys and functions of the Gigaset Comfort 551HX 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 Comfort 551HX. 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 Comfort 551HX

Instructions, documents and firmware

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.

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