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Holger Freyther holger at freyther.de> On 30. May 2017, at 08:23, Harald Welte <laforge at gnumonks.org> wrote: > > Hi Mychaela, > > > If I remember correctly, it was the Gemalto EHS-6, which can disable the > GPS uart and re-cycle that UART for the audio frames. It might also > have been a Quectel UC-20. Now that I think more about it, I think it > was the UC-20. Yes UC-20, with 40ms (according to the documentation not 20ms!) of audio at a time. I have used gstreamer with the filebin to send audio and cat+ audacity to receive it. holger