Hi Harald,
Thanks. The most important part for any kind of debugging however is always the pcap data of the A-bis and A interfaces, which are unfortunately not provided. If possible, please re-run.
I just made another run and got the pcap:
https://www.freecalypso.org/members/falcon/osmo-cni/session2.pcap
I ran tcpdump with the following filter script:
tcp port 3002 or tcp port 3003 or udp port 2427 or udp port 4729 or proto 132
which should have captured Abis between OsmoBSC and nanoBTS, SCTP carrying A, MGCP and GSMTAP. I also configured gsmtap logging in OsmoMSC and OsmoBSC for this run - are there any more components that need to have gsmtap logging enabled? I started logging after all of OsmoCNI processes were up and running (I used vty to enable gsmtap logging without saving it), but before I connected the PoE cable to the nanoBTS - thus everything from nanoBTS power-up onward should be in the log. Once nanoBTS booted up and started transmitting, I registered two phones and dialed a call from 3302 to 3301. The call failed exactly like before.
M~