wireshark, viewing Abis communication

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/.

Harald Welte laforge at gnumonks.org
Wed Jul 29 16:02:41 UTC 2009


On Wed, Jul 29, 2009 at 05:31:03PM +0200, Nordin wrote:
> Hello Harald,
> 
> Should the plugin you added for Wireshark decode almost all messages
> or not? Cause on the OML layer a lot of OML messages are not
> decoded, is this behaviour normal?

there is a oml decoder plugin, I've posted it to this list, it is in our git
tree and it is mentioned in the wiki, so it should be pretty easy to find.

> I now try to follow the communication flow, but can't seem to
> understand the multiple  OML messages. It starts with 0x00, than a
> datalen and than protocol (0xFF) and than it starts with 0x80,
> 0x80,.... But I can't find 0x80 (messagetype) in OpenBSC source.
> I've checked ipaccess.h and ipaccess.c, but nothing...maybe I lokked
> at the wrong place.

oml is implemented in abis_nm.c

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)




More information about the OpenBSC mailing list