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Harald Welte laforge at gnumonks.orgHi Neels, On Fri, Jul 21, 2017 at 12:47:35AM +0200, Neels Hofmeyr wrote: > Some code that is disabled to be able to compile libmsc without libbsc is > related to communication to the BTS, that is replaced by the new A-interface. > However, the following bits are not; Any opinions about what to do with it: my suggestion here would be a set of optional, vendor-specific TLVs that we can introduce in the A interface to convey related information. Those extensions could be enabled by default using a vty command on the BSC, and could be disabled for strict interop with other implementations that don't understand them. > - Report on which ARFCN and timeslot a silent call has occured. > I would simply drop the ARFCN and timeslot information, saying "silent call > successful". (same in two log messages) Would be easy to include information about the actual physical channel from BSC -> MSC, such as BTS number (maybe CGI=MCC+MNC+LAC+CID), ARFCN, timeslot/sub-slot (rsl chan_nr)... This is generally useful for all kinds of debugging. In a similar manner I would tranasport some kind of subscriber name/identification from the MSC to the BSC so the BSC can still show who has allocated a given channel. In its most generic form it could be as simple as a string TLV that the MSC can add to whatever downlink A interface message, and which the BSC accepts in every such message to talloc_replace_string() a field in its lchan, which can then be printed by various code (particularly logging) or used as log filter, or whatever else. > - Add Osmocom specific TLVs to SMPP Could be handled the same way, but should be yet another option, as it adds a lot of verbosity to the A interface which it otherwise doesn't need. Not the highest priority, but definitely doable with reasonable effort. > - Siemens BS11 MRPCI > > /* see mail on openbsc@ 9 Feb 2016 22:30:15 +0100 > * We need to hook sending of MRPCI to Siemens BS11 somewhere else */ > if (is_siemens_bts(conn->bts)) > send_siemens_mrpci(msg->lchan, classmark2-1); this has to be moved to the BSC. > - Debug log: report bts - trx - ts - ti in mncc_rcvmsg() > (No BTS information available in OsmoMSC anymore) see above, can be retrieved from those TLVs which we send once when confirming the activation of a channel (= SCCP connection). > - In gsm48_cc_rx_setup(), populate struct gsm_mncc setup with lchan type. > (lchan information is no longer available in OsmoMSC) same as above. > - In libmsc, gsm_04_08.c, we connect libbsc handle_abisip_signal(); the same is > done in osmo_bsc_audio.c in osmo_bsc_audio_init(), so I assume it can be > dropped from libmsc. well, who are the usrers of the signal? -- - 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)