| Command | 
 | Function | 
| 
 | 
 | 
 | 
| 
 | &D2 | Modem hangs up, returns to the Command Mode after DTR toggle | 
| 
 | 
 | 
 | 
| 
 | &D3 | Resets modem after DTR toggle | 
| 
 | 
 | 
 | 
| &F_ | &F | Recall factory default configuration | 
| 
 | 
 | 
 | 
| &G_ | &G0 | Guard tone disabled | 
| 
 | 
 | 
 | 
| 
 | &G1 | Guard tone disabled | 
| 
 | 
 | 
 | 
| 
 | &G2 | 1800 Hz guard tone | 
| 
 | 
 | 
 | 
| &K_ | &K0 | Disable flow control | 
| 
 | 
 | 
 | 
| 
 | &K3 | Enable RTS/CTS hardware flow control | 
| 
 | 
 | 
 | 
| 
 | &K4 | Enable XON/XOFF software flow control | 
| 
 | 
 | 
 | 
| 
 | &K5 | Enable transparent XON/XOFF flow control | 
| 
 | 
 | 
 | 
| 
 | &K6 | Enable both RTS/CTS and XON/XOFF flow control | 
| 
 | 
 | 
 | 
| &M_ | &M0 | Asynchronous operation | 
| 
 | 
 | 
 | 
| &P_ | &P0 | US setting for  | 
| 
 | 
 | 
 | 
| 
 | &P1 | UK and Hong Kong  | 
| 
 | 
 | 
 | 
| 
 | &P2 | Same as &P0 setting but at 20 pulses per minute | 
| 
 | 
 | 
 | 
| 
 | &P3 | Same as &P1 setting but at 20 pulses per minute | 
| 
 | 
 | 
 | 
| &R_ | &R0 | Reserved | 
| 
 | 
 | 
 | 
| 
 | &R1 | CTS operates per flow control requirements | 
| 
 | 
 | 
 | 
| &S_ | &S0 | Force DSR Signal High (ON) | 
| 
 | 
 | 
 | 
| 
 | &S1 | DSR off in command mode, on in  | 
| 
 | 
 | 
 | 
| &T_ | &T0 | Ends test in progress | 
| 
 | 
 | 
 | 
| 
 | &T1 | Perform Local Analog Loopback Test | 
| 
 | 
 | 
 | 
| 
 | &T3 | Perform Local Digital Loopback Test | 
| 
 | 
 | 
 | 
| 
 | &T4 | Grant Remote Digital Loopback Test request by remote modem | 
| 
 | 
 | 
 | 
| 
 | &T5 | Deny Remote Digital Loopback Test request | 
| 
 | 
 | 
 | 
| 
 | &T6 | Perform a Remote Digital Loopback Test | 
| 
 | 
 | 
 | 
| 
 | &T7 | Perform a Remote Digital Loopback Test and  | 
| 
 | 
 | 
 | 
| 
 | &T8 | Perform Local Analog Loopback Test and  | 
| 
 | 
 | 
 | 
| &V | &V0 | Displays Active and Stored Profiles | 
| 
 | 
 | 
 | 
| 
 | &V1 | Display Last Connection Statistics | 
| 
 | 
 | 
 | 
| &W_ | &W0 | Stores the active profile as Profile 0 | 
| 
 | 
 | 
 | 
| 
 | &W1 | Stores the active profile as Profile 1 | 
| 
 | 
 | 
 | 
| %E_ | %E0 | Disable  | 
| 
 | 
 | 
 | 
| 
 | %E1 | Enable  | 
| 
 | 
 | 
 | 
| +MS? | 
 | Displays the current Select Modulation settings | 
| 
 | 
 | 
 | 
| +MS=? | 
 | Displays a list of supported Select Modulation options | 
| 
 | 
 | 
 | 
Appendix B. Manual modem commands 33