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Under MS-DOS, with the modem on COM2:, you should be able to test the modem by entering a command line at the keyboard, like _COPY COM2: < Carriage Return >_, followed by the string you want to send (presumably modem instructions like _ATDT 9,1234567_), followed by _< Control X >_ to transmit the string to the modem. The sample string given would dial 9, pause, then dial 123-4567 on a touch-tone phone line. Hayes-compatible commands include: ATDP Dial on a pulse (dial) phone ATDT Dial on a touch-tone phone ATH Hang up ATZ Hang up and reset to default settings A/ Repeat last command ATB0 Use international protocol ATB1 Revert to Bell mode ATC0 Turn off carrier signal ATC1 Turn on carrier signal ATE0 Turn off echo to screen ATE1 Turn on echo to screen ATF0 Turn off half duplex ATF1 Turn on half duplex ATLn Set speaker volume; n = 1 .. 3 ATM0 Turn speaker off ATM1 Turn speaker on ATQ0 Turn on result codes ATQ1 Turn off result codes ATS0n Set register 0 to number of ring to answer on; n = 0 to 255 rings ATS6n Set register 6 to wait time for dial tone; n = 2 -255 seconds ATS7n Set register 7 to wait time for carrier; n = 1-60 seconds ATV0 Display result codes as digits ATV1 Display result codes as words ATY0 Neither send nor respond to break signals ATY1 Send four seconds of break signal before disconnecting. Disconnect if 1.6 seconds of break signal is received. [Note: Each command string must begin with _AT_ or _at_, not _aT_ or _At_. This lets the modem determine the baud rate, word length, and parity.] When the modem is in online mode (that is, expecting data), it can be returned to local command mode without disconnecting by (at least) one second of silence, then _+++_, then one more second of silence. Result codes are: 0 OK Command executed 1 CONNECT Connect at 0-300 bps 2 RING Ringing signal detected 3 NO CARRIER 4 ERROR Error in command line 5 CONNECT 1200 Connected at 1200 bps 6 NO DIALTONE 7 BUSY 8 NO ANSWER 10 CONNECT 2400 Connected at 2400 bps GregJ _______________________________________________ Plug maillist - Plug@lists.nothinbut.net http://lists.nothinbut.net/mail/listinfo/plug