Q2687 disconnection


#1

Hi all

Im am using a Q2687 modem to connect through a USB port, using the Wavecom drivers and a Windows dail-up connection. It seems to work fine, however the modem randomly disconnects.

From the output log file modem log-file it seems that the problem is due to the carrier detect, CD, however I’m not sure how to remedy this:

10-09-2007 23:51:02.390 - Modem type: Wavecom USB modem
10-09-2007 23:51:02.390 - Modem inf path: oem52.inf
10-09-2007 23:51:02.390 - Modem inf section: WMmodem
10-09-2007 23:51:02.390 - Matching hardware ID: usb\vid_114f&pid_1234
10-09-2007 23:51:02.421 - 19200,8,N,1, ctsfl=1, rtsctl=2
10-09-2007 23:51:02.437 - Initializing modem.
10-09-2007 23:51:02.437 - CD is high while initializing modem.
10-09-2007 23:51:02.453 - Send: AT
10-09-2007 23:51:02.453 - Recv: OK
10-09-2007 23:51:02.453 - Interpreted response: OK
10-09-2007 23:51:02.468 - Send: ATE0V1
10-09-2007 23:51:02.468 - Recv: OK
10-09-2007 23:51:02.468 - Interpreted response: OK
10-09-2007 23:51:02.484 - Send: AT
10-09-2007 23:51:02.484 - Recv: OK
10-09-2007 23:51:02.484 - Interpreted response: OK
10-09-2007 23:51:02.484 - Waiting for a call.
10-09-2007 23:51:02.500 - Send: ATS0=0
10-09-2007 23:51:02.500 - Recv: OK
10-09-2007 23:51:02.500 - Interpreted response: OK
10-09-2007 23:51:02.500 - 19200,8,N,1, ctsfl=1, rtsctl=2
10-09-2007 23:51:02.531 - Initializing modem.
10-09-2007 23:51:02.531 - CD is high while initializing modem.
10-09-2007 23:51:02.546 - Send: AT
10-09-2007 23:51:02.546 - Recv: OK
10-09-2007 23:51:02.546 - Interpreted response: OK
10-09-2007 23:51:02.562 - Send: ATE0V1
10-09-2007 23:51:02.562 - Recv: OK
10-09-2007 23:51:02.562 - Interpreted response: OK
10-09-2007 23:51:02.578 - Send: AT
10-09-2007 23:51:02.578 - Recv: OK
10-09-2007 23:51:02.578 - Interpreted response: OK
10-09-2007 23:51:02.578 - Dialing.
10-09-2007 23:51:02.593 - Send: ATDT*##***##
10-09-2007 23:51:02.593 - Recv: CONNECT 19200
10-09-2007 23:51:02.593 - Interpreted response: Connect
10-09-2007 23:51:02.593 - Connection established at 19200bps.
10-09-2007 23:51:02.593 - Error-control off or unknown.
10-09-2007 23:51:02.593 - Data compression off or unknown.
10-09-2007 23:51:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-09-2007 23:53:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-09-2007 23:55:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-09-2007 23:57:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-09-2007 23:59:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:01:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:03:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:05:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:07:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:09:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:11:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:13:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:15:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:17:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:19:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:21:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:23:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:25:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:27:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:29:32.609 - Read: Total: 0, Per/Sec: 0, Written: Total: 0, Per/Sec: 0
10-10-2007 00:30:56.937 - CD dropped–Remote modem hung up. ModemStatus=02951e90
10-10-2007 00:30:56.937 - While processing CD event, CD is reported as high when it should be low
10-10-2007 00:30:56.937 - While processing CD dropping, CTS or DSR was found low.
10-10-2007 00:30:56.937 - Hanging up the modem.
10-10-2007 00:30:56.937 - Hardware hangup by lowering DTR.
10-10-2007 00:30:56.937 - 19200,8,N,1, ctsfl=1, rtsctl=2
10-10-2007 00:30:56.937 - Initializing modem.
10-10-2007 00:30:56.937 - DSR is low while initializing the modem. Verify modem is turned on.
10-10-2007 00:30:56.937 - CTS is low while initializing modem.

Does anyone have any suggestions?

Thanx in advance

Best regards