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  1. Bonzay

    When an iphone receives a text the 3904 has call issues when it hears the notification

    This situation is possible when one of the participants in the connection is analog, for example FALC. The IPhone ringtone for a message is 2100 Hz. This is the fax receive transition tone. And the DSP channel goes into the T.38 codec. Naturally - voice traffic does not pass. It is necessary to...

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