Multitech MT64DSU Owner's Manual page 47

Appendixes
DTE Dialing (S15) - Selects the type of asynchronous auto-dialing
to be used by the DTE port. Options are AT Command, DTR (low-
to-high), AT or DTR, and DISABLED. The factory default setting is
AT Command--S15 = 2.
Parameter Options
The following options enable downloading of configurations
parameters to a remote unit and the ability to lock a local unit to
prevent local or remote changes to the configuration:
Param Download (*W) - The AT*W command downloads
parameters to the remote unit. All S-Registers S0 through S16; as
well as the settings of DIP-Switches 1, 2, 5 thru 7 and 12 can be
loaded to the remote unit.
Param Lock (S19) - Setting this option ON prevents unintentional
local changes in parameter settings. When the setting is ON, no
parameter, except this one, can be changed from the DCE port and
the unit will not accept a download command from the remote unit.
The factory default setting is OFF-- S19 = 0.
System Reset (*R) - This command performs a "soft " reset of the
unit and starts the operation from the beginning. It also signals the
remote unit (if connected) to clear all remote test conditions.
Default Settings (&F) - This command restores the factory default
settings. All factory settings, except stored phone numbers.
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