Apple Express Fax/Modem - Manual (Page 147)

3 Auto-reliable mode The modem interrogates the remote modem
for MNP capabilities. If the remote modem supports MNP, a
reliable connection is established. If the remote modem does not
support MNP, a normal connection is established.
\O MNP link negotiation Treated as ATO0 command. Modem returns to
on-line state. MNP Link is not negotiated.
\Tn Inactivity timer Where n is a decimal integer between 0 and 90
specifying minutes. Sets the number of minutes the modem waits before
automatically hanging up when data is not sent or received. The default
option
n=0 disables the timer.
\U MNP link negotiation Treated as ATO0 command. Modem returns to
on-line state. MNP link is not terminated.
\V n MNP result codes
0 Disables modified MNP result codes.
1 Enables modified standard MNP result codes 24 to 28.
2 Returns OK. No effect.
\X n Flow control processing
0 No pass-through flow control If modem-to-modem flow control
is enabled, AT\G1, XON/XOFF characters received from the line
are filtered out of the data stream; they are not passed to the DTE.
1 Pass-through flow control If modem-to-modem flow control is
enabled, AT\G1, XON/XOFF flow control characters received from
the line are passed through to the DTE.
\Y MNP link signaling Treated as ATO0 command. Modem returns to
on-line state. MNP link is not negotiated.
\Z MNP termination Treated as ATO0 command. Modem returns to
on-line state. MNP link is not negotiated.
135 M O D E M C O M M A N D S E T