ZyXEL Communications 662HW Series - Manual (Page 124)

Prestige 662H/HW Series User’s Guide
Chapter 9 WAN Setup 124
9.10 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.
9.11 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 Prestige uses this hardware signal to force the WAN device to hang up, in
addition to issuing the drop command "ATH".
9.12 Response Strings
The response strings tell the Prestige 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.
9.13 Configuring Advanced Modem Setup
To configure settings for your backup WAN modem, click WAN, WAN Backup and then the
Advanced Setup button. The Advanced Setup screen displays, click the Edit button to open
the Advanced Modem Setup screen as shown next.
Back Click Back to return to the previous screen.
OK Click OK to return to the previous screen, then click Apply to save the changes.
Cancel Click Cancel to begin configuring this screen afresh.
Table 28 Advanced WAN Backup (continued)
LABEL DESCRIPTION
Note: Consult the manual of your WAN device connected to your dial backup
port for specific AT commands.