This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Holger Freyther holger at freyther.de
> On 24 Mar 2017, at 16:09, Edwin Reed-Sanchez <ereedsanchez at gmail.com> wrote:
>
> Holger,
>
> classic radio interference?
>
> - could this be caused by having amplifiers to high, and being close to another BTS? Should I attenuate the amplification in Osmotrx?
Difficult to say. You can look at the RSL measurement reports and
take a look if there is something obvious, e.g. rxlev/rxqual being
very bad
>
> looks like a change of SSRC? What does RTP look like?
>
> - where do I gather information for RTP. Is it in the logs, or in the configs. We currently are not using
> rtp jitter-buffer 0
> in the osmobts config.
In Wireshark under Edit->Preferences->Protocol->RSL ("Use nanoBTS
defitnition"). Then you will see IPA CRCX/MDCX/DLCX to manage the
audio flow and Wireshark will be able to identify the RTP streams.
With Telephony->RTP->Show all Streams you can see how many streams
SRC ip/port, DST ip/port, SSRC exist. Then compare the timestamps
from the log with timestamp of the RTP packet. Is there another
stream/SSRC? Is this is just the first sequence number (which should
be random) and leads to a big jump?
holger