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NSN

SDCCH_RADIO_FAIL (C1003)

SDCCH_ABIS_FAIL_OLD (C1076)

SDCCH_A_IF_FAIL_OLD (C1079)

SDCCH_ABIS_FAIL_CALL (C1075)

SDCCH_RF_OLD_HO (C1004)SDCCH_USER_ACT (C1037)

SDCCH_BCSU_RESET (C1038)

SDCCH_NETW_ACT (C1039)

SDCCH_BTS_FAIL (C1036)

SDCCH_LAPD_FAIL (C1035)

SDCCH_A_IF_FAIL_CALL (C1078)

(-)T3101_EXPIRED (057020)

channel activation failures before est ind

should be after est ind when sdcch is actually seized?

major contributor is at C1003 radio fail which pegs even before est ind.

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ERICSSON

CNDROP

(-) CNRELCONG

upon sending clear request and after est ind

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HUAWEI

CM30:Call Drops on SDCCH

after est ind and before clear request message gets sent out from BSC