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Thread: DTMF on SIP2 is not detected on some calling devices

  1. #1

    Default DTMF on SIP2 is not detected on some calling devices

    I have noticed this issue recently, I am on Quardro 16x
    Boot loader: 3.0.32/Release
    Firmware Version: 5.1.39/Release

    it turns out that if phone calls originate from some specifiec devides DTMF is not detected by Quadro.

    So far I have confirmed this to occure on Samsung Galaxy Nexus i9250 and on Panasonic ISDN phone.

    It does work in Samsung i5700 and iPhone 5, though

    My question: are there any hidden options to fine tune DTMF detection by Quadro?

  2. #2

    Default

    I found this page: dtmfduration.cgi, set duration to 45 and it seems to has helped

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