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USBDeviceOpenSeize returning kIOReturnExclusiveAccess with Motorola C650 cellphone

Hello,

I'm having an issue with an application that is trying to talk to a Motorola cellphone. FYI the app uses libusb. The problem arises when doing USBDeviceOpenSeize. It returns kIOReturnExclusiveAccess. Classic is not running. I'm running 10.3.8.

Using USB prober, I see:

3.110 [5] Finding device driver for Motorola Phone (C650), matching personality using com.apple.driver.InternalUSBModem, score: 59000

4.001 [5] Finding device driver for Motorola Phone (C650), matching personality using com.apple.driver.AppleUSBCDCEthernet, score: 60000

4.002 [5] Finding device driver for Motorola Phone (C650), matching personality using com.apple.driver.AppleUSBCDCDriver, score: 60000

I don't know that it helps, but I can use minicom pointed at /dev/cu.usbmodem1B1. I was able to give it an atdt followed by my land line number, and the land line rang. The phone also indicated that it was calling me.

Any thoughts?

Thanks,
Brett

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