Lenovo ThinkStation D20 (English) User guide - Page 52

Command I_ I0 I1 I2 I3 I4 L_ L0 L1 L2 L3 M_ M0 M1 M2 M3 N_ O_ O0 O1 P Q_ Q0 Sr? Sr=n T V_ V0 V1 W_ W0 W1 W2 X_ X0 X1 X2 X3 X4 Z_ Z0 Z1 Extended AT commands Command &C_ &C0 &C1 46 ThinkStation User Guide Function Display product-identification code Factory ROM checksum test Internal memory test Firmware ID Reserved ID Low speaker volume Low speaker volume Medium speaker volume High speaker volume Internal speaker off Internal speaker on until carrier detected Internal speaker always on Internal speaker on until carrier detected and off while dialing Included for compatibility only, provides no effect Return to Data Mode Return to Data Mode and initiate an equalizer retrain Set Pulse dial as default Modem sends responses Read and display value in register r. Set register r to value n (n = 0-255). Set Tone Dial as default Numeric responses Word responses Report DTE speed only Report line speed, error correction protocol, and DTE speed. Report DCE speed only Hayes Smartmodem 300 compatible responses/blind dialing. Same as X0 plus all CONNECT responses/blind dialing Same as X1 plus dial tone detection Same as X1 plus busy detection/blind dialing All responses and dial tone and busy signal detection Reset and retrieve active profile 0 Reset and retrieve active profile 1 Function Force Carrier Detect Signal High (ON) Turn on CD when remote carrier is present