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ISDN Data Connections: The Dial-In Connection

On the Dial-In Connection tab of the ISDN Data Connections dialog, you define if and how you can dial in to the camera either via an ISDN router or via a computer with ISDN card.

To manage the ISDN connections for dialing out, click on the Dial-Out Connections tab; certain parameters for dialing out (Dialing Pause, Dial-Out Limits) can be configured on the Dial-Out Parameters tab.

General Parameters

Parameter Description
ISDN Dial-In Use this option to either Enable or Disable dialing in via ISDN. If you already have defined settings, these remain saved even if dial-in is disabled.
Termination Reboot

Activate this option and the camera will reboot after a connection has been terminated.

It is recommended not to use this feature together with network connections via the Ethernet interface or if you expect numerous ISDN connections within a short timeframe.

This feature has been disabled by factory default.

Camera MSN

The MSN (Multiple Subscriber Number) is the telephone number used to call the camera. By factory default, the camera will react to every MSN of an ISDN port.

Set the MSN you would like the camera to react to:

  • Leave the field empty if you would like the camera to accept every MSN valid for the ISDN port.
  • Enter the MSN of the ISDN port you would like to assign to the camera. If the camera is connected directly to an NT, enter the MSN without prefix.
Note: The easiest way to determine the correct MSN is to call the camera and then reload the Dial-in Connection tab. Then, click on the button with this MSN to accept it.
Allowed Phone Numbers

The camera can be configured to only react to calls that originate from accepted telephone numbers.

In order to create a list of accepted telephone numbers, enter the numbers in the text box, one per line.

Note: The calling telephone number may be truncated or changed during the transfer! In order to easily be able to determine a call's correct telephone number, the MSN of the last calling device is displayed that has been detected at this ISDN bus. To allow a computer or router for dialing in, you need to call the camera from the respective device and then reload the Dial-in Connection tab. Then, click on the button with this MSN to accept it.

If you leave the list empty, the camera will answer every call.

Camera IP Address

The camera uses this IP address for ISDN dial-in connections. It can vary from the IP address of the network interface. It is recommended to only change the ISDN IP address with good reason.

By factory default, the ISDN IP address is identical to the IP address of the network interface.

Caller IP Address This IP address is assigned to a computer that dials into the camera via ISDN. Normally, no entry is necessary here as the camera automatically will use the IP address of the caller incremented by two.

When entering an IP address here, make sure that this address has not yet been assigned to another device within your local network. The caller IP address has to be different from the Camera IP Address.

Idle Time In order to minimize telephone costs, the camera can terminate an ISDN connection if it does not detect data traffic within the period of time specified here.
Authentication It is recommended to always select an authentication protocol. Most computers understand both protocols. Other than PAP, CHAP transmits encrypted user name and password information.
Note: If you select None, it is possible to dial-in to the camera without authentication. For security reasons this is not recommended!
Camera Login

For successfully logging onto the camera, you need to enter a user name and password for authentication.

Note: It is recommended to replace the factory defaults by specifying your own user name and password.


Parameter Description
Default Route If ISDN Dial-In is activated, you can set the default route for this connection (provided this has not yet been configured) in this dialog.

For defining additional routes, open the Routing dialog. For additional information on the topic, see the Routing help page.

Konfiguration sichern

Klicken Sie auf Setzen, um die Einstellungen zu aktivieren und bis zum nächsten Neustart der Kamera zu sichern.

Beenden Sie den Dialog durch Klick auf Schließen. Hierbei wird geprüft, ob Änderungen der Gesamtkonfiguration vorliegen. Ist dies der Fall, werden Sie gefragt, ob die Gesamtkonfiguration dauerhaft gesichert werden soll.

 Zum Aktivieren der neuen Einstellungen speichern Sie die Konfiguration und führen einen Neustart der Kamera durch!

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