Westermo TD-22 - Manual (Page 23)

24 6177-2203
\Nn – Operating Mode
This command controls the preferred error correcting mode to be negotiated in a subsequent data
connection. This command is affected by the OEM firmware configuration.
\N0 Selects normal speed buffered mode (disables error-correction mode). (Forces &Q6.)
\N1 Selects direct mode and is equivalent to &M0, &Q0 mode of operation. (Forces &Q0.)
In this mode the serial port is directly connected to the data pump, which results in the
lowest possible delay time. This is useful in i.e. the case of polled PLC systems where
the response time is critical.
\N2 Selects reliable (error-correction) mode. The modem will first attempt a LAPM
connection and then an MNP connection. Failure to make a reliable connection results
in the modem hanging up. (Forces &Q6, S36=4, and S48=7.)
\N3 Selects auto reliable mode. This operates the same as \N2 except failure to make a
reliable connection results in the modem falling back to the speed buffered normal
mode, \N0. (Forces &Q5, S36=7, and S48=7.)
\N4 Selects LAPM error-correction mode. Failure to make an LAPM error-correction
connection results in the modem hanging up. (Forces &Q5 and S48=0.) Note: The -K1
command overrides the \N4 command.
\N5 Selects MNP error-correction mode. Failure to make an MNP error-correction
connection results in the modem hanging up. (Forces &Q5, S36=4, and S48=128.)
(Default \N3)
Please also refer to AT&M, AT&Q, S36, S48
On – Return to On-Line Data Mode
This command determines how the modem will enter the on-line data mode. If the modem is in the
on-line command mode, the enters the on-line data mode with or without a retrain. If the modem is in
the off-line command mode (no connection), ERROR is reported.
O0 Enters on-line data mode without a retrain. Handling is determined by the Call
Establishment task. Generally, if a connection exists, this command connects the DTE
back to the remote modem after an escape (+++).
O1 Enters on-line data mode with a retrain before returning to on-line data mode.
Please also refer to S2, S12
*P – Store Dial Back Number and Password
This command causes the modem to store a password and to store or delete a corresponding
telephone number in NVRAM. The password will be used to match the supplied by a remote modem
when secure access is used. The modem will use the telephone number to dial back the remote
modem. The password must be between 6 and 12 characters in length. The telephone number length
is 40 characters maximum. If the number to be dialled back (along with the final colon) is omitted, a
password check will be performed, but no callback will occur. Up to 20 passwords/telephone number
pairs may be entered.
AT*Pn: <password>:<number to be dialled back>
Parameters: 0 to 19
Please also refer to AT*L
Not available in remote programming mode (AT*R)