Hello Harald,
On Tue, 28 Jul 2009 20:58:46 CEST, "Dieter Spaar" spaar@mirider.augusta.de wrote:
I just took a quick look at the dump with Wireshark, its possible to safe the raw RTP payload from within Wireshark and it looks OK (31-byte EFR packages starting with 0xC in the high nibble). However I have no ready-made EFR decoder available so I can't decode the speech.
I did play a little bit with the EFR reference implementation from GSM 06.35. Its possible to convert the data and I can understand a few words (a "Yes" at the beginning and a "Bye" at the end). However it seems that several RTP packages are missing, also the RTP Analysis Tool of Wireshark says so (according to it more than 80% is missing). Anyway, basically EFR decoding seems to work as expected.
Best regards, Dieter