Cellular Network Infrastructure

Starting from https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bsc-test-sccplite/1644/, we see a massive fallout. Most of them fail due to timeout waiting for response to CRCX.

Timeout waiting for response to {
    line := {
        verb := "CRCX",
        trans_id := "0",
        ep := "1@mgw",
        ver := "1.0" 
    },
    params := {
        {
            code := "M",
            val := "sendrecv" 
        },
        {
            code := "C",
            val := "51234" 
        },
        {
            code := "L",
            val := "p:20, a:AMR" 
        }
    },
    sdp := {
        protocol_version := 0,
        origin := {
            user_name := "-",
            session_id := "23",
            session_version := "42",
            net_type := "IN",
            addr_type := "IP4",
            addr := "127.0.0.4" 
        },
        session_name := "-",
        information := omit,
        uri := omit,
        emails := omit,
        phone_numbers := omit,
        connection := {
            net_type := "IN",
            addr_type := "IP4",
            conn_addr := {
                addr := "127.0.0.5",
                ttl := omit,
                num_of_addr := omit
            }
        },
        bandwidth := omit,
        times := {
            {
                time_field := {
                    start_time := "0",
                    stop_time := "0" 
                },
                time_repeat := omit
            }
        },
        timezone_adjustments := omit,
        key := omit,
        attributes := omit,
        media_list := {
            {
                media_field := {
                    media := "audio",
                    ports := {
                        port_number := 14000,
                        num_of_ports := omit
                    },
                    transport := "RTP/AVP",
                    fmts := {
                        "3" 
                    }
                },
                information := omit,
                connections := omit,
                bandwidth := omit,
                key := omit,
                attributes := {
                    {
                        ptime := {
                            attr_value := "20" 
                        }
                    }
                }
            }
        }
    }
}
      BSC_Tests.ttcn:12030 BSC_Tests control part
      BSC_Tests.ttcn:4047 TC_assignment_fr_a5_0 testcase

Even more tests started to fail today: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bsc-test-sccplite/1648/.