Looking at https://osmocom.org/projects/cellular-infrastructure/wiki/Point_Codes
OsmoMSC currently uses 0.23.1 for A-and-Iu, and 0.23.2 for Iu only if Iu is on a different cs7 instance than A (i.e. practically never).
Either way that doesn't really make sense to me. If OsmoMSC is connecting to the same STP for A and Iu, it is sufficient to have one point-code for the two SSNs for A (BSSAP) and Iu (RANAP) and hence use one cs7 instance for both.
If it is connecting to two different STPs, the point codes do not collide anyway, and it makes no sense to use a different one for Iu. It only confuses the defaults, e.g. the wiki page was wrong until I fixed it just now.
I would rather have just 0.23.1 for the MSC for all SSNs.
See ss7_setup() in msc_main.c.
Agreed?
~N