US Robotics SportsterVoice User Manual page 46

&P n Sets pulse (rotary) dial make/break ratio.
* &P0 U.S./Canada ratio, 39%/61%
&P1 U.K. ratio, 33%/67%
&R n Sets Receive Data (RD) hardware flow control,
&Hn).
&R0 Reserved
&R1 Modem ignores RTS
* &R2 Received Data to computer only on RTS
&S n Controls Data Set Ready (DSR) operations.
* &S0 DSR override; always ON
&S1 Modem controls DSR
&T n Begins test modes.
&T0 Ends testing
&T1 Initiates Analog Loopback
&T2 Reserved
&T3 Initiates Local Digital Loopback
&T4 Enables Remote Digital Loopback
* &T5 Prohibits Remote Digital Loopback
&T6 Initiates Remote Digital Loopback
&T7 Initiates Remote Digital with self-test and
&T8 Initiates Analog Loopback with self-test
Request to Send (RTS) (see also &In and
error detector
and error detector
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