kamailio-config-tests/scenarios/invite_peerout_max_out/prefs.json.tt2

{
    "@invite-peerout-max-out.scenarios.test": {
        "nat_sipping": "no"
    },
    "peer_00_invite_peerout_max_out_host0": {
        "concurrent_max_out": 0
    },
    "peer_01_invite_peerout_max_out_host0": {
        "concurrent_max_out": -1
    }
}