Holger Freyther <holger(a)freyther.de> wrote:
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.
What exactly are the bits which you send and receive every 40 ms? Do
you get two 260-bit GSM 06.10 codec frames every 40 ms, with the
ability to send your own arbitrary bits into the TCH uplink, including
the possibility of passing non-speech data over voice TCH if the
network does TFO as in GSM 02.53? The latter is what the Calypso DSP
allows.
M~