Help needed with CSD/V.110 decoding

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/.

Tobias Engel t-openbsc at tobias.org
Thu Sep 27 11:53:18 UTC 2012


On 23.09.12 17:52, Tobias Engel wrote:
> I have been trying to implement some basic CSD functionality into
> openbsc. V.110 transparent mode, to be specific, since this should be
> the most simple to implement.
> 
> At first I tried with a nanobts, but that didn't seem to work at all.
> Now I am using a bs-11.

As it turns out, neither the nanobts nor the bs-11 seem to support V.110
transparent mode.

The nanobts doesn't even get past the synchronisation phase in a CSD
call and the bs-11 garbles all data on the uplink (downlink works fine,
though o_O ).

One reason might be that V.110 transparent mode is only supported by
very few basebands (I only know of TI and Mediatek).

So unless somebody wants to donate an RLP implementation (for
non-transparent mode), I am going to do something else now ;)

-Tobias





More information about the OpenBSC mailing list