User manual

Chapter 13 Interfaces
ZyWALL USG 300 User’s Guide
354
13.10 Auxiliary Interface
This section introduces the auxiliary interface and then explains the screen for it.
13.10.1 Auxiliary Interface Overview
Use the auxiliary interface to dial out from the ZyWALL’s auxiliary port. For
example, you might use this interface as a backup WAN interface.
You have to connect an external modem to the ZyWALL’s auxiliary port to use the
auxiliary interface.
Note: You have to connect an external modem to the auxiliary port.
The ZyWALL uses the auxiliary interface to dial out in two situations.
1 You click the Connect icon on the ZyWALL Status screen.
2 The load auxiliary interface must connect to satisfy load-balancing requirements.
You have to add the auxiliary interface to a trunk first.
When the ZyWALL hangs up the call, it drops the Data Terminal Ready (DTR)
signal and issues the command ATH.
13.10.2 Auxiliary
Use the Auxiliary screen to configure the ZyWALL’s auxiliary interface. Click
Configuration > Network > Interface > Auxiliary to open it.