ZyXEL Communications 10 - Manual (Page 72)

ZyWALL 10~100 Series Internet Security Gateway
5-4 WAN and Dial Backup Setup
Table 5-2 Menu 2: Dial Backup Setup
FIELD DESCRIPTION EXAMPLE
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to Confirm…” to save
your configuration, or press [ESC] at any time to cancel.
5.5 Advanced WAN Setup
Consult the manual of your WAN device connected to your Dial Backup port for
specific AT commands.
5.5.1 AT Command Strings
For regular telephone lines, the default “Dial” string tells the modem that the line uses tone dialing. “ATDT”
is the command for a switch that requires tone dialing. If your switch requires pulse dialing, change the string
to “ATDP”.
For ISDN lines, there are many more protocols and operational modes. Please consult the documentation of
your TA. You may need additional commands in both “Dial” and “Init” strings.
5.5.2 DTR Signal
The majority of WAN devices default to hanging up the current call when the DTR (Data Terminal Ready)
signal is dropped by the DTE. When “Drop DTR When Hang Up” is set to Yes, the ZyWALL uses this
hardware signal to force the WAN device to hang up, in addition to issuing the drop command “ATH”.
5.5.3 Response Strings
The response strings tell the ZyWALL the tags, or labels, immediately preceding the various call parameters
sent from the WAN device. The response strings have not been standardized; please consult the
documentation of your WAN device to find the correct tags.
To edit the advanced setup for the Dial Backup port, move the cursor to the Edit Advanced Setup field in
Menu 2 - WAN Setup, press the [SPACE BAR] to select Yes and then press [ENTER].