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AT Command Set Operation
Cellular Power Level
)Mn
Adjustment
Encryption Key Size
Initial Cellular Power
@M n
Level Settings
@M2-@M10
@M11-@M31
Encryption Mode
N?
Country code
\N n
Asynchronous protocol
060R122-000
Issue 15
Controls the automatic power adjustment of the transmit power level to accommodate
the signaling requirements of cellular telephone equipment.
For both cellular and land based originate or answer modes, if
mit power level used for non-MNP10 or fax connections is the
setting should not be used when
)M0
Disables transmit power level adjustment during MNP10 link negotiation. The
command allows the transmitter adjustment if cellular operation is requested by the
remote modem (recommended).
)M1
Enables transmit power level adjustment during MNP10 link negotiation. Uses the
@Mn
value to establish initial cellular connection. After connection, the optimal
power level is determined by the modem.
For use in AES Encryption and Secure Access (SAM) modems only, this command
sets the bit size of the encryption key.
Sets the encryption key to 128 bits.
)M0
Sets the encryption key to 192 bits.
)M1
Sets the encryption key to 256 bits.
)M2
Sets the initial transmit power level for up-shift at connect until line conditions can be
determined. Levels can be set from -10 dBm to -31 dBm.
Initial transmit power level of -30 dBm (recommended).
@M0
Initial transmit power level of -26 dBm.
@M1
Initial transmit power level of -10 dBm
Initial transmit power level of -11 dBm to -31 dBm, respectively.
J
Performs MNP10 link negotiation at 1200 bps (this call only). See
Enables power level adjustment during MNP10 link negotiation (this call only).
K
)M1
See
command.
For use in AES Encryption and Secure Access (SAM) modems only, this command
sets the encryption mode.
(Default) Sets encryption mode to ECB (Electronic Code Book). For AES or SAM.
@M0
Sets encryption mode to CBC (Cypher Block Chaining). For AES only.
@M1
Sets encryption mode to CTR (Counter). For AES only.
@M2
Displays the current country the modem is configured for. In general, the country
code displayed is the country's international calling code.
Selects the various possible asynchronous protocols the modem is allowed to
negotiate upon establishing a data link.
Options the modem to run in wire mode, performing speed buffering by copying
\N0
characters from the VF port to the DTE port and vice versa.
Options the modem to run in direct mode: the DTE and VF speeds must match, and
\N1
there is no speed buffering. Direct mode is V.14 asynchronous mode.
Limits error correction to MNP links only, or hang up.
\N2
\N3
Options the modem to run in auto reliable mode, and to negotiate V.42 or alternate
links. With no link, the modem enters wire mode (speed buffering).
Limits error correction to a V.42 (LAPM) link only, or hang up.
\N4
Options the modem to attempt either a V.42 (LAPM) or MNP link. If either link fails,
\N5
the modem will hang up.
\N6
Selects the use of V.13 simulated controlled carrier operation.
SpectraComm Dual V.34 Modem
Installation and Operation
AT Command Reference Tables
)M1
@Mn
*H2
is selected.
is set, the trans-
)M1
value. The
)M0
*H1
command.
4-11
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