If in 3G we have Iub Limit, in term of congestion 2G (abis IP) we have PREJABISCONG in object type CELLGPRS3.If the counter OVERLOADREJCON in object type CLTCH and PREJABISCONG in object type CELLGPRS3 step up this is indicate that there is abis overload that prevent the system from setting up new TBF (Prejabiscong) or new CS connection. In term of Frame Loss, we can refer to formula as follows: ULFramePktLoss = 100 * LOSTULPACK / (TOTULPSSCFRBUF + TOTFRULSCBUF) [%]DLFramePktLoss = 100 * LOSTDLPACK / (TOTDLPSSCFRBUF + TOTFRDLSCBUF ) [%]Threshold Frame/Packet Loss =0.1 % dan bersamaan dengan IP packet discard yg juga semakin naik.formula Ip Packet Discard :CSdiscFrameOvlDL = 100 * CSDISCOVL / FRAMECOUNT [%]PSdiscFrameOvlDL = 100 * PSDISCOVL / FRAMECOUNT [%]-----------------------------------------------------------------------------------------------------------------------------------Serba serbi TBFTBF UL = 100*(([PSCHREQ]-[PREJTFI]-[PREJOTH])/[PSCHREQ])Ket :PSCHREQ : Number of packet access requests in the cell received in the PCU on any channel: RACH, PRACH or PACCH (in Packet Downlink Ack/Nack). A packet access request is normally to setup an uplink TBF. Units: integer PREJTFI :Number of rejected packet access requests for the reason no PDCH, no USF or no TFI. Request is rejected by sending either Immediate Assignment Reject message or Packet Access Reject message. Increasing the number of basic physical channels that can be allocated as PDCH will generally have a positive effect on this counter. The parameters ULDELAY, USFLIMIT and TFILIMIT may also have an effect and are described in Reference [21]. Units: integer PREJOTH : Number of rejected access requests for any other reason than no PDCH, no USF or no TFI and packet Abis overload. Request is rejected by sending either Immediate Assignment Reject message or Packet Access Reject message. Note that PREJOTH also include Packet Access Requests rejected due to GPH Load Control mechanism, that is, the rejects that are separately counted by LCLRPARREJ and LCPARREJ. Units: integerParameter Formula Object Type CalculationMultislot Util GPRS 100 * (MUTILBASIC + MUTILGPRS) / (TRAFF2BTBFSCAN + TRAFF2GTBFSCAN) TRAFGPRS2 averageMultislot Util EGPRS 100 * (MUTILEGPRS) / (TRAFF2ETBFSCAN) TRAFGPRS2 averageBlocking (UL) 100* (PREJTFI/PSCHREQ) CELLGPRS2 maxBlocking (DL) 100* (FAILDLTBFEST / DLTBFEST) CELLGPRS max------------------------------------------------------------------------------------------------------Formula GB Peak :KPI_SV_GB_PEAK_KBITPERSEC=GPRSCAP.pmGBTRAFPEAKCongest Utk Gb over IP : Gb Time Congestion = 100*(GBTIMECONG/(PERLEN*60))