| #!/usr/bin/env python3 |
| from osmo_gsm_tester.testenv import * |
| |
| hlr = tenv.hlr() |
| bts = tenv.bts() |
| mgw_msc = tenv.mgw() |
| mgw_bsc = tenv.mgw() |
| stp = tenv.stp() |
| msc = tenv.msc(hlr, mgw_msc, stp) |
| bsc = tenv.bsc(msc, mgw_bsc, stp) |
| ms_mo = tenv.modem() |
| ms_mt = tenv.modem() |
| ms_mo_emerg = tenv.modem() |
| ms_mt_emerg = tenv.modem() |
| |
| # Configure timeslots so that only 1 concurrent call (MO MT, 2 MS) is allowed |
| bts.set_num_trx(1) |
| bts.set_trx_phy_channel(0, 0, 'CCCH+SDCCH4') |
| bts.set_trx_phy_channel(0, 1, 'TCH/F') |
| bts.set_trx_phy_channel(0, 2, 'TCH/F') |
| bts.set_trx_phy_channel(0, 3, 'PDCH') |
| bts.set_trx_phy_channel(0, 4, 'PDCH') |
| bts.set_trx_phy_channel(0, 5, 'PDCH') |
| bts.set_trx_phy_channel(0, 6, 'PDCH') |
| bts.set_trx_phy_channel(0, 7, 'PDCH') |
| |
| hlr.start() |
| stp.start() |
| |
| # Set MSC to route emergency call to ms_mt_emerg: |
| msc.set_emergency_call_msisdn(ms_mt_emerg.msisdn()) |
| msc.start() |
| |
| mgw_msc.start() |
| mgw_bsc.start() |
| |
| bsc.bts_add(bts) |
| bsc.start() |
| |
| bts.start() |
| wait(bsc.bts_is_connected, bts) |
| |
| hlr.subscriber_add(ms_mo) |
| hlr.subscriber_add(ms_mt) |
| hlr.subscriber_add(ms_mo_emerg) |
| hlr.subscriber_add(ms_mt_emerg) |
| |
| ms_mo.connect(msc.mcc_mnc()) |
| ms_mt.connect(msc.mcc_mnc()) |
| ms_mo_emerg.connect(msc.mcc_mnc()) |
| ms_mt_emerg.connect(msc.mcc_mnc()) |
| |
| ms_mo.log_info() |
| ms_mt.log_info() |
| ms_mo_emerg.log_info() |
| ms_mt_emerg.log_info() |
| |
| print('waiting for modems to attach...') |
| wait(ms_mo.is_registered, msc.mcc_mnc()) |
| wait(ms_mt.is_registered, msc.mcc_mnc()) |
| wait(ms_mo_emerg.is_registered, msc.mcc_mnc()) |
| wait(ms_mt_emerg.is_registered, msc.mcc_mnc()) |
| wait(msc.subscriber_attached, ms_mo, ms_mt, ms_mo_emerg, ms_mt_emerg) |
| |
| # Initiating first call between ms_mo and ms_mt. It should be dropped when later an emergency call comes in |
| assert len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0 |
| mo_cid = ms_mo.call_dial(ms_mt) |
| mt_cid = ms_mt.call_wait_incoming(ms_mo) |
| print('dial success') |
| assert not ms_mo.call_is_active(mo_cid) and not ms_mt.call_is_active(mt_cid) |
| ms_mt.call_answer(mt_cid) |
| assert len(ms_mo.call_id_list()) == 1 and len(ms_mt.call_id_list()) == 1 |
| |
| sleep(5) # maintain the normal call active for 5 seconds |
| |
| assert len(ms_mo.call_id_list()) == 1 and len(ms_mt.call_id_list()) == 1 |
| assert len(ms_mo_emerg.call_id_list()) == 0 and len(ms_mt_emerg.call_id_list()) == 0 |
| # Calling emergency number should be redirected to ms_mt as configured further above: |
| emerg_numbers = ms_mo_emerg.emergency_numbers() |
| assert len(emerg_numbers) > 0 |
| print('dialing Emergency Number %s' % (emerg_numbers[0])) |
| mo_cid_emerg = ms_mo_emerg.call_dial(emerg_numbers[0]) |
| # In here we'd ideally wait for incoming call and accept it, but there may be a |
| # race condition in previous MT TCH not being yet released, so BSC will only be |
| # able to allocate a SDCCH for not a TCH, and will fail later with Assignment |
| # Failure: |
| mt_cid_emerg = ms_mt_emerg.call_wait_dialing(ms_mo_emerg) |
| print('dial success') |
| assert ms_mo_emerg.call_state(mo_cid_emerg) == 'alerting' |
| # Now the emergency call is ongoing, and the previous one should have been gone: |
| wait(lambda: len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0) |
| print('preemption worked') |
| |
| sleep(5) # maintain the emergency call active for 5 seconds |
| print('done sleepig, success') |