HP Pavilion xu100 HP OmniBook 500 - Reference Guide Revision 3 - Page 160

Reference Information Modem Reference Information Modem Reference Information Note If your computer has a built-in modem, you can customize the operation of the modem using AT commands and S-registers. You can do this from Modems (Windows 98) or Phone and Modem Options (Windows 2000 and XP) in Control Panel, from most communications software, or by using terminal mode in your software. See "To change your modem settings" on page 66. You should have a good understanding of modems and how they operate before you change default settings. This section contains summary information about AT commands, S-registers, and selected result codes for the built-in modem. Command +++ / A A/ D... D$ DL DL? DSn E0 E1 F0 F1 H0 H1 I0 I1 I2 Modem Reference (3Com, US Robotics) In the following AT command table, default settings are shown in bold. All listed AT commands except +++, /, and A/ must be preceded by "AT." AT Commands (3Com, US Robotics) Function (3Com, US Robotics) Escape to online command mode (not preceded by AT) Pause (not preceded by AT), 125 ms default Answer manually Repeat last command (not preceded by AT) Dial a phone number and issue other optional commands: 0-9=Dial digit, T=Tone dial, P=Pulse dial, R=Call an originate-only modem, W=Wait for second dial tone (X2, X4), @=Wait for answer (X3, X4), (comma)=Pause in dialing, !=Flash switch hook, #=Auxiliary tone dial digit, *=Auxiliary tone dial digit, ;=Stay in command mode after dialing, $=Wait for calling card bong, &=Wait for calling card bong, "=Dial the letters that follow. Display a list of dial commands Redial last number Display last dialed number Dial stored number (n=0,1,2,3) Turn command echo off Turn command echo on Turn online echo on Turn online echo off Hang up (go on-hook) Pick up (go off-hook) Display the 4-digit product code Display the checksum Display the RAM test results 160 Reference Guide