EXCEPTION CODES
Exception Code= 171: - cause code 14 : this is reflected by pmNoRrcReqenied!dm"l#$% this cause code means that more R!& boards need to be added to the R'(s in order to meet the uplin) requirements* many admission re+ects due to a lac) of uplin) channel elements $hich $ill tri,,er soft con,estion* - cause code 1 : Rbsl#$Resources this can be seen by pmNoRrcReqenied pmNoRrcReqenied!dml#$ !dml#$% % this exception exception means that that more .x boards boards need to to be added in order to meet the do$nlin) requirement for channel elements* - cause code 1/ : 0hys#sChanimit* maxNum#sdpa"sers 4 is surpassed 2license allo$s maximum of 43* example more then 4 #( users $ere tryin, to ma)e calls% but license only allo$s 4 #(0! users* .he solution is to load a license allo$in, more #( users and to chan,e parameter maxNum#sdpa"sers maxNum#sdpa"sers to reflect reflect the ne$ license* license* * - cause code 1 2similar to 17-563: (1/" limitation ---8.his number needs to be increased in order to a9oid this accessibility restriction for (#1/" $hich corresponds for example to R!' #(/4* example (1/" set to 1/ meanin, that the utrancell $ill only allo$ 1/ radiolin)s $ith spreadin, factor 1/* .he analysis sho$s that this number has to be increased in order to meet the traffic requirement* - cause code 55 : Edchimit(er9in,Cell% maxNumEul"sers = 4% license allo$s 1/% thus number of eul users for this cell should be increased to allo$ for eul users* -cause code : lCode* .his can be seen by counter pmNoRrcReqenied pmNoRrcReqenied!dmlCh !dmlChnlCode* nlCode* .his exception exception occurs $hen $hen there there is a shorta,e of channeli;ation codes* RRC is re+ected because all the codes are used up* ! solution to this problem is to either deploy another carrier or another R'( in order to offload the traffic - cause code 5: .he number of #( users $ith 5ms ..< $ithin ser9in, cell is limited by parameter "tranCell::eul(er9in,Cell"sers!dm.ti5 2default is 43* hen more than eul(er9in,Cell"sers!dm.ti5 "Es attempt to ha9e particular particular cell as ser9in, ser9in, cell $ith 5ms ..<% the exception exception coed is raised* .his may be applicable $hen chan,in, ser9in, cell% or R!' establishment*
s most probbable% that hi,her number of this exception codes comes directly from increased 0( #(E" traffic* Exception Code 7: - causecode = ?61 means drhcRh@noResources* C o9erloaded% not e9enly allocated% chec) AstdaA command "Es column Exception Code 11: - causecode = B: CE@!!5NC<@(ERDER@DER!* .his re+ect cause is issued to protect aal5 ser9er because of a possible o9erload from the application side* (ome of the reasons that cause those re+ects: reason 1%
the !!5NC< client is sendin, bursts of connection establishment requests to the ser9er* .he ser9er accepts a limited number 2663 of requests 2for all clients to,ether3% and it $ill re+ect all further re+ects before it finishes handlin, at least 16 of them* reason 5% some of the data transfer resources 2!!5R< clients3 are not respondin, fast enou,h or not respondin, at all on connectdisconnect requests recei9ed from the !!5R< ser9er 2the same pro,ram as !!5 NC< ser9er3 thereby delayin, the moment $hen the ser9er $ill be able to accept ne$ connection establishment requests* - causecode = 411: 0roblem seen in R# allocatin, traffic beared in the internal C00 !!5 reser9ation function* E9en in <0 confi,uration ?B56 still uses !. for internal communication* - causecode = 46/: drh.r'r@cppNciNodeConnRe+ 2 NC< re+ected the local !!5 connection request* t use them*
attached $ithin 56 seconds* .his mechanism pre9ents han,in,s* (ee (C(16455 Exception Code 4: .his exception is ,enerated $hen maximum number of retransmissions are performed on RC and reset - causecode = 1: seen in con+unction the exceptions EC515?5*
in the form on the !!5 troubleshootin, $eb pa,e to ,et decoded information: http:$$$*desi,n*et)*extern*eu*ericsson*seE0!R.EN.(E.M@@Csys@mn,n ch@i@9aal5@hints*shtml Exception Code 55?: result of decreased a9ailable resources in the node* (imilar to 171 Exception Code 5/5: ailed to allocate a "eContext in "E#* .oo many #an,in, rift "E Ctxts* (ee 0rimus (C(5176 Exception Code ?16: Recei9ed si,nal N'!0 R!<
Exception Code 41: Recei9ed si,nal R!N!0 Relocation 0reparation ailure* 0roblem $ith
Exception Code 5: I.<ER .@C#@(<.C#@1 has expiredJ #ere the "E has not responded durin, a Channel ($itchin, procedure* urther in9esti,ation required on the cells affected* rom the CK it is interestin, to note that nearly all the channel s$itchin, transitions in9ol9ed C# -8 !C#* .his could su,,est that "E lost contact $ith the net$or) initially leadin, to channel s$itchin, due to "E
Iloss of contactJ timers* .he rcost timer controls ho$ lon, RNC $aits after losin, a connection before releasin, the resources* .he purpose of these timers is to reduce the number of dropped calls because the "E may come bac) in synchronisation on the radio lin) before this timer expires $hich $ill reco9er the call* .his is +ust an example of $here the net$or) is delayin, releasin, the RRC resources* .he beha9iour on the "E side can be different bet$een 9endors resultin, in "E retryin, RRC connection before RNC has released the pre9ious RRC connection* 0lease refer to 0 t understand the information from (RNC in Radioin)!dditionRequest messa,e Exception Code 7/: lo,ical error in rrc radio bearer reconf essa,e in % so the "E thin)s that the messa,e is $ron, Exception Code 77: lo,ical error in rrc radio bearer reconf complete essa,e in "% in this case is the RNC that does not li)e the ans$er from the "E* Exception Code 66: unallocated "eCtxt in "E# recei9es the unexpected ch($itchE9al
Exception Code 47: ailed hando9er of E"#( call and release due to C( set relnRe+ect = .rue* .he reason for failed hando9er is $hen there is only one cell in acti9e set% tar,et cell not supportin, #( or E"*
