3Com 3CP5610A User Manual page 81

&N37 54,666 bps
&N38 56,000 bps
&Pn Sets pulse (rotary) dial make/break ratio.
&P0 U.S./Canada ratio, 39%/61%
&P1 U.K. ratio, 33%/67%
&Rn Sets Receive Data (RD) hardware flow control, Request to
Send (RTS) (see also &Hn).
&R0 Reserved
&R1 Modem ignores RTS
&R2 Received Data to computer only on RTS
&Sn Controls Data Set Ready (DSR) operations.
&S0 DSR override; always ON
&S1 Modem controls DSR
&Tn Begins test modes.
&T0 Ends testing
&T1 Analog Loopback
&T2 Reserved
&T3 Local Digital Loopback
&T4 Enables Remote Digital Loopback
&T5 Prohibits Remote Digital Loopback
&T6 Initiates Remote Digital Loopback
&T7 Remote Digital with self-test and error detector
&T8 Analog Loopback with self-test and error detector
Extended Data Commands 75