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Valid IP Addresses for Call Accept
To enhance the security of the called Serial Modem, the user can restrict call
acceptance only to a number of permanently stored IP addresses.
Activating Password Configuration Mode
The settings can only be made in password configuration mode. You can enter this
mode for the first time by entering ATP<Enter>. If the master password has been
changed, the new master password must be entered.
ATP<Enter>
ATPmaster password Entry of the changed master password.
Entering / Changing / Deleting IP Addresses
In password configuration mode, you can store up to ten IP addresses in a list
(ATR0...ATR9). Any assignment is possible.
If only an IP address is assigned, calls from this IP address only are accepted.
If this list is empty (default), incoming calls from all Serial Modems are accepted.
ATR0=192.168.10.12 Calls are accepted by IP address 192.168.10.12
ATR0=<Enter>
Note: The connection via the serial RS232 interface can only be established with the
baudrate and data format currently set in the modem.
Reading IP Addresses
ATR? or ATR0?... ATR9? enable you to read individual IP addresses and AT&R all IP
addresses.
ATR0? IP address 1 is output.
AT&R All IP addresses are listed.
Saving Changes:
All changes are only applied when they are saved.
Saving is performed by entering AT&W.
AT&W
Note: If the settings are not saved, all changes are lost as soon as the Serial Modem is
disconnected from the power supply.
Ending Password Configuration Mode
After saving the settings, you must end password configuration mode again.
Entering AT&P ends configuration mode.
AT&P Ends password configuration mode
SIEMENS AG
Entry on initial configuration.
(example).
IP address 1 is deleted
Page 69 of 79
Manual 7XV5655-0BB00
C53000-G1176-C175-3
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