User's Manual
V34bis Fax-modem - AJ 2885 P
AJ 2885 P - Page 36
6.
Security and memory
6.1. Principles
The modem contains three types of memory:
The FLASH-E
PROM
, where factory configuration is stored permanently,
The
RAM
, where the modem configurations are stored temporary,
The
NVRAM
where semi-permanent data is stored even when the modem is turned off.
The first time your modem is turned on, or after a complete reset, these three memories are
identical and set to the default factory configuration.
The
AT&Wn
command saves the current configuration in the non-volatile memory, (n = 0 to 4)
or activates a factory configuration for the next reset (n=5 to 9).
For example :
AT &W0
save and activate the current user’s parameters in bank 0
AT &W5
activates factory configuration bank 0 for next reset, with no change on the
other user’s configuration banks.
The last stored user configuration will be loaded automatically on next power-up.
These memory operations are shown on the following diagram:
PROM
Factory
configuration
NV-RAM
Stored
configuration
RAM
Active
configuration
AT&W255
AT&F
AT&W
Power-up
AT%m or
Memory reset
AT&W255
Memory store
AT&W0 to AT&W4
Loading of a factory configuration without loosing the stored
memory
AT&F0 to AT&F4
Loading the user configuration
AT%M0 to AT%M4
6.2.
The phone directory
Up to 100 phone numbers can be stored in the modem's non-volatile memory, to be used by the
automatic dialler.
Save a number
AT&Z0:Directory::11:::A
This command saves automatically the directory in non-volatile memory
Dial a number
ATDS0 <CR>
Display the directory
AT&N <CR>
