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Chapter 43 System
ZyWALL USG 100/200 Series User’s Guide
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43.11 Dial-in Management
Connect an external serial modem to the AUX port to provide a management connection in
case the ZyWALL’s other WAN connections are down. This is like an auxiliary interface,
except it is used for management connections coming into the ZyWALL instead of as a
backup WAN connection.
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.
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.
Response Strings
The response strings tell the ZyWALL the tags, or labels, immediately preceding the various
call parameters sent from the serial modem. The response strings have not been standardized;
please consult the documentation of your serial modem to find the correct tags.
43.11.1 Configuring Dial-in Mgmt
Click System > Dial-in Mgmt to display the following screen. Configure this screen for dial-
in management connections.
Add icon Click the Add icon in the heading row to open a screen where you can add a new
rule. Refer to Table 239 on page 682 for information on the fields.
Click the Edit icon to go to the screen where you can edit the rule.
Click the Add icon in an entry to add a rule below the current entry.
Click the Delete icon to remove an existing rule. A window display asking you to
confirm that you want to delete the rule. Note that subsequent rules move up by one
when you take this action.
Click the Move to N icon to display a field to type a number for where you want to
put that rule and press [ENTER] to move the rule to the number that you typed.
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
Table 244 System > SNMP (continued)
LABEL DESCRIPTION