Westermo TD-22 - Manual (Page 22)

23 6177-2203
&Mn – Asynchronous/Synchronous Mode Selection
This command determines the DTR operating mode. The modem treats the &M command as a subset
of the &Q command.
&M0 Selects direct asynchronous operation. Note that the command sequence &M0\N0
selects normal buffered mode, but the command sequence \N0&M0 selects direct
mode. This is because the \N0 command is analogous to the &Q6 command.
The value 000b is written in the S27 bits 3, 1 and 0 respectively. (See &Q)
&M1 Selects synchronous connect mode with asynchronous off-line command mode.
The value 001b is written to S27 bits 3,1, and 0, respectively.
&M2 Selects synchronous connect mode with asynchronous off-line command mode. same
as &M1 except that &M2 enables DTR dialling of direct slot 0. The modem will
disconnect if DTR is OFF for more than the period in S25 (in units of hundredths of a
second) the data connection will be synchronous. The value 010b is written to S27 bits
3,1 and 0 respectively.
&M3 Selects synchronous connect mode. This mode allows DTR to act as a voice/data
switch. The call is manually initiated while DTR is inactive. When DTR becomes
active, the handshake proceeds in originate or answer mode according to S14 bit 7.
The value 011b is written to S27 bits 3,1 and 0 respectively.
Please also refer to AT&D, AT&Q, AT\N
)Mn – Enable Cellular Power Level Adjustment
Enables or disables automatic adjustment of the transmit power level during link negotiation
for reliable links to accommodate the signalling requirements of cellular telephone equipment.
The parameter value, if valid, is written to S40 bit 2.
)M0 Disables power level adjustment during MNP10 link negotiation. (Default.)
)M1 Enables power level adjustment during MNP10 link negotiation.
Please also refer to AT\N
Nn – Automode Enable
This command enables or disables Automode detection. The parameter value, if valid, is written to
S31 bit 1.
N0 Automode detection is disabled. A subsequent handshake will be conducted according
to the contents of S37 or, if S37 is zero, according to the most recently sensed DTE
speed.
N1 Automode detection is enabled. A subsequent handshake will be conducted according
to the Automode algorithm supported by the modem. This command is equivalent to
F0. (Default.)
Please also refer to ATF