Thanks Neels, It is it is necessary to mention that I have used an IP
access module as HNB and it is connected to my core. So the RTP packets are
received from HNB and I send my RTP packets to HNB (call connection is
established before). I have attached my RTP pcap file. I don't know how I
can convert this log (RTP packet payloads which you said has IuUP header)
to an AMR file.
I have removed the IuUP header (4 bytes) from payload and concatenated all
payloads but the result is not a valid AMR bytes!
Also I think osmo-mgw will not be able to convert IuUP bytes to AMR in
offline mode.
Can you help me more?
On Fri, Feb 24, 2023 at 3:45 PM Harald Welte <laforge(a)osmocom.org> wrote:
On Fri, Feb 24, 2023 at 09:15:29AM +0100, Tomcsanyi,
Domonkos wrote:
AFAIR Wireshark cannot play our RTP streams
because it has a very
limited set of codecs, mostly focusing on regular VoIP
audio.
it can play GSM. Our patches for AMR codec support unfortunately were
refused
even after everyone assumed the patents had expired and hence no IPR issues
were known anymore.
We'd still love to get AMR codec support in - especailly since wireshark
wouldn't even contain the codec itself but just link to a system-installed
libopencore-amrnb which probably every distribution ships these days.
--
- Harald Welte <laforge(a)osmocom.org>
https://laforge.gnumonks.org/
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A6)
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