# Checking network interfaces

(Configuration "System" Interfaces view)

Here you can check the available network interfaces for the exchange connection and bar unused network interfaces for outgoing calls.

The figure shows the communication server’s current port connection. Move the mouse over the sockets to display the port connections. Click a socket to access the interface configuration.

Bar a network interface for outgoing calls

1. Select the unused analogue or ISDN network interface. You can select it by clicking the port on the figure or in the interface lists Analogue or ISDN.

2. Activate outgoing barred (Outgoing barred: )

3. Save the setting by clicking the Apply button.

Parent topic: Configuration assistant
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