Connecting a door intercom system with a/b interface

You can connect door intercom systems with an a/b interface to your FRITZ!Box.

Connecting and Configuring a Door Intercom System

The following functions are available if you connect your door intercom system to the FRITZ!Box:

  • Pick up doorbell calls on the telephone, speak with visitors and open the door.
  • Answer the doorbell from outside the home on a mobile telephone or other connection, speak with visitors and open the door.
  • Configure a group with multiple telephones for answering the doorbell.
  • View the image on the door intercom system camera on FRITZ!Fon cordless telephones (live image).
  • Configure a special ring tone on the FRITZ!Fon for the doorbell.
  • Configure up to 4 doorbell rings on the FRITZ!Box.

Door Intercom Systems Supported

  • Door intercom systems with an a/b interface that use DTMF tone dialing. Other solutions like "Telekom 2-Draht" or "FTZ 123 D 12" are not supported.

Configuring a Busy Signal and Dial Tone in the Door Intercom System

If you have to enter a busy signal and a dial tone in the door intercom system, enter the following values:

  • Busy signal: 500 ms tone, 500 ms pause, +/- 20 ms (425 Hz +-25 Hz)
  • Ring tone: 1 s tone, 4 s pause +/-100 ms

Instructions: Connecting a door intercom system

  1. Connect the door intercom system to the "FON 1" or "FON 2" port on the FRITZ!Box.
  2. In the FRITZ!Box user interface: Select "Telephony / Telephony Devices".
  3. Click "Configure New Device".
  4. Select "Door intercom system" and click "Next".
  5. Select the port to which the door intercom system is connected.
  6. Click "Next" and follow the wizard's instructions.
  7. On the "Telephony / Telephony Devices" page: Click on the "Edit" button next to your door intercom system.
  8. Configure the desired settings and then click on "OK".

Settings

The following settings for your door intercom system are available by clicking the "Edit" button on the "Telephony Devices" page:

SettingUse
Telephone number of the doorbell Number of the extension set for the doorbell in the door intercom system. If an incorrect number is entered, the doorbell will not be routed to the telephone.
Route doorbells to

Specifies where the doorbell should be routed to. This can be:

  • an individual telephone
  • all connected telephones
  • A group of up to 4 connected telephones
  • Telephone number (for instance, your mobile telephone number or another external number)
FRITZ!Fon ring tone When the doorbell is routed to a FRITZ!Fon, you can define a ring tone for the doorbell.
Outgoing calls via The FRITZ!Box uses this telephone number when the doorbell is to be routed to a mobile telephone number or another external telephone number.
Character sequence for door opener If the doorbell is routed to a FRITZ!Fon, enter the characters used to open the door. Then you can open the door on the FRITZ!Fin using a function key (button with changing functions shown on the display).
Live Image View the image on the door intercom system camera.

Configuring and Using the View Live Image Feature

Overview

With the "live image" feature, whenever the door intercom system is called you can view the system's camera image on your FRITZ!Fon

Requirements

  • FRITZ!Fon with color display (MT-F, C4 or newer)
  • The camera of the door intercom system records images in JPG/JPEG, PNG or GIF file format.
  • The camera makes the images available via FTP or HTTP without authentication (HTTPS is not supported).

Rules

  • You can zoom in the camera image on the FRITZ!Fon. For this the camera resolution should be set to at least 640 x 480 pixels, because zooming is extremely computation-intensive at lower resolutions. On many door intercom systems you can set the resolution directly or via the camera's address (URL).

Instructions: Setting Up a Live Image

  1. Select "Telephony / Telephony Devices" and then click on the "Edit" button next to your door intercom system.
  2. Enter the address (URL) of the camera image in the "Live image" field. The URL must end with the file format of the image (for example, image.jpg).
  3. Click "OK".

FRITZ!Fon telephones now show the image on the camera of the door intercom system whenever the door intercom system is called.

Configuring and Zooming in the Live Image on FRITZ!Fon

You can specify the section of the image for the live image and switch between a normal and a zoomed view. The settings also apply for display on other FRITZ!Fon telephones and remain saved until the next time they are changed. Use the following keys:

KeysUse
OK Switch between normal view and zoomed view (200% digital zoom).
Navigation keys (up / down / right / left)

Specify the section of the image in a 3 x 3 grid (normal view) or 9 x 9 grid (zoomed view).

Navigation is subject to a slight delay.