User manual

AT COMMAND SET
Section 4
4-24
Copyright (C) Dataplex Pty Ltd
AT*D DUMB Mode
Parameters : 0 to 3
Default : 0 (Disabled)
To prevent modem "lock up", it is advised that the escape sequence 'pause'
+++
'pause' be disabled when using the Dumb Mode (see Register S2 description for more
details).
AT*D0 - Allows the DPX-213 to respond to normal AT command and attention sequences.
AT*D1 - Disables AT command acceptance and echo. Once the modem is configured, AT
commands can no longer gain control of the DPX-213. The modem will still
abort connect sequence if a key is pressed during the training sequence.
AT*D2 - Disables call placement abort on DTE activity. If characters are sent to the
modem during call connect sequence the modem will ignore them.
AT*D3 - Equivalent to activating both AT*D1 and AT*D2.
AT*E Data Compression
Parameters : 0 or 1
Default : 0 (Data compression disabled)
AT*E controls the data compression feature of the modem during error corrected
connections. The AT*E command must be used in conjunction with the AT&E command.
AT*E0 - MNP 2-5 data compression disabled.
AT*E1 - MNP 2-5 error correction and data compression enabled. The highest level is
determined by modem negotiation. The modem will fall back to CSI or
disconnect
if no remote MNP is detected.
AT*G Calling Tone
Parameters : 0 or 1
Default : 0 (Disabled)
AT*G enables the CCITT recommended V.25 calling tone. This is an intermittent 1300Hz
tone generated by the originating modem during the connection phase of a call.
AT*G0 - Causes the DPX-213 to be silent when calling.
AT*G1 - Enables an interrupted 1300 Hz tone to be sent by the calling DPX-213 after
dialling and before the remote modem carrier is detected.