Ositech comm Trumpcard Data/Fax Modem - Manual (Page 52)

4 - 20 Trumpcard 14400/28800 Modem
Section Four
&Dn — DTR Option
Parameters 0, 1, 2, or 3
Default 0
Determines actions taken by the modem in relation to the Data Terminal
Ready (/DTR) signal of the serial port. The effect of /DTR loss depends
upon the &D and &Q (&M) commands.
The action for the event that follows /DTR loss is indicated in the following
table:
&D0 &D1 &D2 &D3
&Q0 NONE 2 3 4
&Q1 1 2 3 4
&Q2 3 3 3 3
&Q3 3 3 3 3
&Q4 1 2 3 4
&Q5 NONE 2 3 4
&Q6 NONE 2 3 4
The DTR-going-off events corresponding to the action numbers in the
above table are:
1. Modem disconnects and sends OK result code.
2. Modem goes into command mode if in data mode and sends the OK
result code.
3. Modem disconnects, sends the OK result code, and disables auto
answer while /DTR is OFF.
4. Modem performs a warm start (i.e., same as Z command).
&F — Restore Factory Configuration
Parameters none
Default none
Loads the modem active configuration area with the factory default values.