Advanced Modem Setup; Configuring Advanced Modem Setup - ZyXEL Communications ZyWALL 5 User Manual

ZyWALL 5 Internet Security Appliance
LABEL
Allocated Budget
Period
Idle Timeout
Apply
Reset
7.8

Advanced Modem Setup

7.8.1 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.
7.8.2 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 the "Drop DTR When Hang Up" check box is selected,
the ZyWALL uses this hardware signal to force the WAN device to hang up, in addition to issuing the
drop command "ATH".
7.8.3 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.
7.9

Configuring Advanced Modem Setup

Click the Edit button in the Dial Backup screen to display the Advanced Setup screen shown next.
Consult the manual of your WAN device connected to your dial
backup port for specific AT commands.
7-16
Table 7-6 Dial Backup Setup
Type the amount of time (in minutes) that the dial backup connection can be used
during the time configured in the Period field. Set an amount that is less than the
time period configured in the Period field.
Type the time period (in hours) for how often the budget should be reset. For
example, to allow calls to this remote node for a maximum of 10 minutes every hour,
set the Allocated Budget to 10 (minutes) and the Period to 1 (hour).
Type the number of seconds of idle time (when there is no traffic from the ZyWALL
to the remote node) for the ZyWALL to wait before it automatically disconnects the
dial backup connection. This option applies only when the ZyWALL initiates the call.
The dial backup connection never times out if you set this field to "0" (it is the same
as selecting Always On).
Click Apply to save your changes back to the ZyWALL.
Click Reset to begin configuring this screen afresh.
DESCRIPTION
WAN Screens