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