Black Box MD1650A-JP, Reference Manual

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CHAPTER 2: AT Commands
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Command: &Y n Select Profile for Hard Reset
Values: n = 0 or 1
Default: None
Description: &Y0 Select profile 0 to be loaded on power-up.
&Y1 Select profile 1 to be loaded on power-up.
NOTE
See also the &W and Z commands.
Command: &Z n=x Store Telephone Number
Values: n = 0–3 (with callback security disabled)
&Z3 is the phone memory location for leased-line dial backup number.
n = 0–29 (with callback security enabled—for a future release)
x = Stored telephone number
Default: None
Description: Stores telephone dial string x in memory location.
&Z3 is the phone memory location for leased-line dial backup number.
Dial the stored number using the ATDS=
n command.
NOTE
See also the #CBS n command.
Command: %C n Data Compression Control
Values:
n
= 0, 1, 2, or 3
Default: 3
Description: Enables or disables data compression negotiation. The modem can
only perform data compression on an error-corrected link.
%C0
Disables data compression.
%C1 Enables MNP 5 data compression negotiation.
%C2 Enables V.42bis data compression negotiation.
%C3 Enables both V.42bis and MNP 5 data compression negotiation.
NOTE
This command controls both V.42bis and MNP 5 data compression, whereas the &E14
and &E15 commands control only V.42bis data compression. The command in effect is
the one last entered.
Command: %E n Line Quality Monitor
Values: n = 0, 1, or 2
Default: 2
Description: Controls whether or not the modem will automatically monitor the line
quality and request a retrain (%E1) or fallback to a lower speed when
line quality is insufficient and fall forward to a faster speed when line
quality is sufficient (%E2).
%E0
Disables line quality monitor and auto-retrain.
%E1 Enables line quality monitor and auto-retrain.
%E2 Enables line quality monitor and fallback/fall forward.