Zyxel-communications Internet Security Gateway ZyWALL 2 Series Manuel d'utilisateur télécharger pdf (Page 106)

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ZyWALL 2 Series User’s Guide

6-22 WAN Screens

Table 6-9 Dial Backup Setup

LABEL DESCRIPTION

Configure Budget Select this check box to have the dial backup connection on during the time that

you select.

Allocated Budget 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.

Period 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).

Idle Timeout 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).

Apply

Click Apply to save your changes back to the ZyWALL.

Reset

Click Reset to begin configuring this screen afresh.

6.11 Advanced Modem Setup

6.11.1 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.

6.11.2 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”.

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