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Old 08-03-2007, 10:26 AM   #1 (permalink)
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Default Modem to modem (not internet) dialing but not connecting

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I try to use my blackberry as a modem to connect to another modem (not to the Internet!).

My success so far:
- connected blackberry 8100 via USB, blackberry desktop manager running
- blackberry modem is set up and known to my windows XP
- Windows XP modem diagnosis can connect to blackberry modem - diagnosis is OK
- dial up networking is set up to use modem - ok
- When using dial up networking to connect to remote modem, number is dialed and phone connection is established (blackberry is dialing and getting a phone connection to the modem - blackberry display shows outgoing call screen)
- I can hear the other modem trying to negotiate a connection (the typical chirping (?) sound).

Here's the problem:
- the blackberry modem is not negotiating with the remote modem. In fact the blackberry is not sending a single beep. It's just listening to the remote modem, with gives up after about 20 seconds and hangs up. Blackberry shows call-ended-screen. Windows will wait another 40(?) seconds an throws an error message.
- The modem log indicates (its german, so my translation may not be 100% accurate)
[some normal initializing stuff]
08-03-2007 13:59:26.297 - Sending: AT<cr>
08-03-2007 13:59:26.307 - Receiving: <cr><lf>OK<cr><lf>
08-03-2007 13:59:26.307 - Interpreted answer: OK
08-03-2007 13:59:26.307 - Dialing
08-03-2007 13:59:26.317 - Sending: ATDT############<cr>
08-03-2007 14:00:26.323 - Timeout while waiting for an answer
08-03-2007 14:00:26.323 - Modem hung up
08-03-2007 14:00:26.323 - Modem hung up after DTR-Signal.
08-03-2007 14:00:26.323 - CD-Signal terminated, cause DTR-Signal is down.
08-03-2007 14:00:27.324 - Timeout while waiting for an answer
08-03-2007 14:00:27.334 - Sending: ATH<cr>
08-03-2007 14:00:27.344 - Receiving: <cr><lf>OK<cr><lf>
08-03-2007 14:00:27.344 - Interpreted answer: OK
08-03-2007 14:00:27.344 - 115200,8,N,1, ctsfl=0, rtsctl=1

I'm on T-Mobile austria and BES

Any help or insight is appreciated

Old 08-06-2007, 07:55 AM   #2 (permalink)
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I know it's a strange problem.

Could anyone at least confirm that it should work? Or is it simply impossible to do a modem-to-modem connect?
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