ZyXEL Communications Internet Security Gateway ZyWALL 100 - Manual (Page 56)

ZyWALL 100 Internet Security Gateway
WAN Setup 5-3
FIELD DESCRIPTION EXAMPLE
Port Speed Press [SPACE BAR] and then press [ENTER] to select the speed of the
connection between the Dial Backup port and the external device.
Available speeds are:
9600, 19200, 38400, 57600, 115200 or 230400 bps.
115200
AT Command
String:
Init Enter the AT command string to initialize the WAN device. Consult the
manual of your WAN device connected to your Dial Backup port for
specific AT commands.
at&fs0=0
Edit Advanced
Setup To edit the advanced setup for the Dial Backup port, move the cursor to
this field; press the [SPACE BAR] to select Yes and then press
[ENTER] to go to Menu 2.1 — Advanced Setup. Yes
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.
5.4 Advanced WAN Setup
Consult the manual of your WAN device connected to your Dial Backup port for
specific AT commands.
5.4.1 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.
5.4.2 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”.