Installing the USB Filter Driver doesn't help. I got the sluggish thingy again and had to disconnect. It take ages to disconnect too. I dig out the log and the strange part is as below. Can anyone troubleshoot it???
06-20-2001 18:11:22.17 - SupraMax 56K USB in use.
06-20-2001 18:11:22.17 - Modem type: SupraMax 56K USB
06-20-2001 18:11:22.18 - Modem inf path: SUP2920.INF
06-20-2001 18:11:22.18 - Modem inf section: Modem
06-20-2001 18:11:23.37 - 115200,N,8,1
06-20-2001 18:11:23.37 - 115200,N,8,1
06-20-2001 18:11:23.37 - Initializing modem.
06-20-2001 18:11:23.37 - Send: AT<cr>
06-20-2001 18:11:23.37 - Recv: AT<cr>
06-20-2001 18:11:23.38 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:11:23.38 - Interpreted response: Ok
06-20-2001 18:11:23.38 - Send: AT&FE0V1S0=0&C1&D2+MR=2;+DR=1;+ER=1;W0<cr>
06-20-2001 18:11:23.38 - Recv: AT&FE0V1S0=0&C1&D2+MR=2;+DR=1;+ER=1;W0<cr>
06-20-2001 18:11:23.38 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:11:23.38 - Interpreted response: Ok
06-20-2001 18:11:23.38 - Send: ATS7=60M0+ES=3,0,2;+DS=3;+IFC=2,2;X4<cr>
06-20-2001 18:11:23.38 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:11:23.38 - Interpreted response: Ok
06-20-2001 18:11:23.38 - Dialing.
06-20-2001 18:11:23.38 - Send: ATDT;<cr>
06-20-2001 18:11:25.79 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:11:25.79 - Interpreted response: Ok
06-20-2001 18:11:25.79 - Dialing.
06-20-2001 18:11:25.79 - Send: ATDT#######<cr>
06-20-2001 18:11:48.94 - Recv: <cr><lf>+MCR: V90<cr><lf>
06-20-2001 18:11:48.94 - Interpreted response: Informative
06-20-2001 18:11:48.94 - Recv: <cr><lf>+MRR: 48000<cr><lf>
06-20-2001 18:11:48.94 - Interpreted response: Informative
06-20-2001 18:11:49.63 - Recv: <cr><lf>+ER: LAPM<cr><lf>
06-20-2001 18:11:49.63 - Interpreted response: Informative
06-20-2001 18:11:49.63 - Recv: <cr><lf>+DR: V42B<cr><lf>
06-20-2001 18:11:49.63 - Interpreted response: Informative
06-20-2001 18:11:49.63 - Recv: <cr><lf>CONNECT 115200<cr><lf>
06-20-2001 18:11:49.63 - Interpreted response: Connect
06-20-2001 18:11:49.63 - Connection established at 48000bps.
06-20-2001 18:11:49.63 - Error-control on.
06-20-2001 18:11:49.63 - Data compression on.
06-20-2001 18:20:30.11 - Hanging up the modem.
06-20-2001 18:20:30.11 - Hardware hangup by lowering DTR.
06-20-2001 18:20:31.31 - WARNING: The modem did not respond to lowering DTR. Trying software hangup...
06-20-2001 18:20:31.31 - Send: +++
06-20-2001 18:20:32.31 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:20:32.31 - Interpreted response: Ok
06-20-2001 18:20:32.31 - Send: ATH<cr>
06-20-2001 18:20:34.31 - Recv: <no response>
06-20-2001 18:20:34.31 - WARNING: Unrecognized response. Retrying...
06-20-2001 18:20:34.31 - Send: ATH<cr>
06-20-2001 18:20:36.31 - Recv: <no response>
06-20-2001 18:20:36.31 - WARNING: Unrecognized response. Retrying...
06-20-2001 18:20:36.31 - Send: ATH<cr>
06-20-2001 18:20:38.31 - Recv: <no response>
06-20-2001 18:20:38.31 - WARNING: Unrecognized response. Retrying...
06-20-2001 18:20:38.31 - Send: ATH<cr>
06-20-2001 18:20:40.31 - Recv: <no response>
06-20-2001 18:20:40.31 - WARNING: Unrecognized response. Retrying...
06-20-2001 18:20:40.31 - Send: ATH<cr>
06-20-2001 18:20:42.31 - Recv: <no response>
06-20-2001 18:20:42.31 - ERROR: Unable to recover from unrecognized response.
06-20-2001 18:20:42.31 - Hardware hangup by lowering DTR.
06-20-2001 18:20:44.72 - WARNING: The modem did not respond to lowering DTR. Trying software hangup...
06-20-2001 18:20:44.72 - Send: +++
06-20-2001 18:20:46.76 - Send: ATH<cr>
06-20-2001 18:20:47.40 - Recv: <cr><lf>OK<cr><lf>
06-20-2001 18:20:47.40 - Interpreted response: Ok
06-20-2001 18:20:47.40 - 115200,N,8,1
06-20-2001 18:20:48.55 - Session Statistics:
06-20-2001 18:20:48.55 - Reads : 497971 bytes
06-20-2001 18:20:48.55 - Writes: 126601 bytes
06-20-2001 18:20:48.55 - SupraMax 56K USB closed.