CALL FAILURES ANALYSIS USING CTP

[echomoon]

content:



1 INTRODUCTION ............................................................................................................... 3
2 CASE 1 : GOOD CALL. .................................................................................................... 7
3 CASE 2 : RADIO_LINK_TIMEOUT / LINK_FAIL COUNTER EXPIRES ..................22
4 CASE 3 DROP CALL DUE TO UPLINK SACCH LOSS ...............................................26
5 CASE 4: HANDOVER FAILED MOBILE FAILS TO RECOVER ................................30
6 CASE 5 : EXPIRY OF TIMER BSSMAP_T10.................................................................37
7 CASE 6 EXPIRY OF ASSIGN_SUCCESSFUL TIMER..................................................45
8 CASE 7 EXPIRY OF T200 TIMER ..................................................................................53
9 USE OF CTP CURRENT DISTRIBUTION .....................................................................58




if u find it useful plz add REP+Thx



b.r

[shup7]

content:



1 INTRODUCTION ............................................................................................................... 3
2 CASE 1 : GOOD CALL. .................................................................................................... 7
3 CASE 2 : RADIO_LINK_TIMEOUT / LINK_FAIL COUNTER EXPIRES ..................22
4 CASE 3 DROP CALL DUE TO UPLINK SACCH LOSS ...............................................26
5 CASE 4: HANDOVER FAILED MOBILE FAILS TO RECOVER ................................30
6 CASE 5 : EXPIRY OF TIMER BSSMAP_T10.................................................................37
7 CASE 6 EXPIRY OF ASSIGN_SUCCESSFUL TIMER..................................................45
8 CASE 7 EXPIRY OF T200 TIMER ..................................................................................53
9 USE OF CTP CURRENT DISTRIBUTION .....................................................................58




if u find it useful plz add REP+Thx



b.r



Thank you so much..

[ayman.absi]

I've a group of 3 cells which cover the same area but they share low Immediate Assignment Success Rate. Is there any way to check it via call trace? just to know if the cause is the same for all?

[mohyedeen_alkousy]

I've a group of 3 cells which cover the same area but they share low Immediate Assignment Success Rate. Is there any way to check it via call trace? just to know if the cause is the same for all?

yes , already tested in Huawei many times
i assume same scenario goes for CTP motorolla
is it random access failure or immediate assignment failure?
if the three cells have exactly same KPI effect then it means that it's radio problem not hardware neither RF cabling