Ositech comm Trumpcard Data/Fax Modem manual Dn DTR Option, Restore Factory Configuration, None

Section Four

&Dn — DTR Option

Parameters 0, 1, 2, or 3

Default0

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

Defaultnone

Loads the modem active configuration area with the factory default values.

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