(RL10 to RL50)S.N.OCategoryFeatureRelease VersionQuestionAnswer1FeatureERAB ModificationRL40What are the parameters can be modified with Feature ERAB Modification(LTE 519)GBR-ARP. NON-GBR:QCI, ARP, UE-AMBR

2FeatureSRVCCRL40What additional nodes/interfaces are required to support SRVCCIMS node and Sv Interface between the MME and MSS3FeatureSRVCCRL40What is the difference between SRVCC and CS FallbackWith SRVCC the VOIP call in LTE (Over IMS) can be handed over to the CS service of WCDMA without inturruption.CSFB requires service interuption and this additional delay4FeatureRRC ReestablishmentRL20Consider an RL20 network , what willl be the Layer 3 Message in DL when a UE sends RRC reestablishment requestRL20 does not support Reestablishment so it would be RRCreestablishment reject from ENB to UE5FeatureVOLTERL30What is the LNBTS parameter to activate IMS Emergency calls?actIMSEmerSessR96FeatureRSRQ Based RedirectionRL50From which LTE Release is RSRQ based redirections supportedRL507FeatureANRRL50What Parameter is used to Enable automatic blacklisting of poor performing InterRat neighbors (GSM/WDMA/TD-SCDMA)nccontrol8FeatureCSFBRL30What enhancement to CSFB is introduced in RL30From RL30CS Fallback to UTRAN has been enhanced with provisioning of System Information of potential target cells9FeatureCSFBRL20What are the features introduced In RL20 for CS support for a LTE UE1.CSFB to GERAN and WCDMA and2. Emergency call handling in the CSFB context10FeatureANRRL10What MO class was essential in RL10 to resolve the reported PCI (By the UE) to the cplane ipaddressesADIPNO11FeatureANRRL20What is the major benefit of ANR(LTE With OAM Extension-LTE 492) of RL20 as compared to the ANR(LTE724) in RL10No need for manual preplanning of ENB adjacencies as in the case of RL10(ADIPNO), ENB accepts X2 from another enb even if target is not configured with C-Plane Ip adress of the source ENB12FeatureANRRL30How does the enb resolve the X2 ip adress in the case of fully UE based ANRThe ENB starting from release RL30 uses the ECGI to resolve the unknown UE reported PCI to the X2 Cplane IP address13FeatureANRRL20What are the key benefits of ANR with OAM extension(LTE 492) Higher X2-based inter-eNB HO Success Ratio(Compared to RL10)14FeatureIntra ENB Interfrequency Load BalancingRL40How is the parameter to activate Interfrequency Load balancing in LTE, from which release is this supportedLNBTS Parameter:actInterFreqLB , Load based Ho are supported from RL40 onwards15FeatureIntra ENB Interfrequency Load BalancingRL40What are the prerequisites to activate interfrequency load balancing1.actifHO must be set to True,2.At least one of thresholdRsrpIFLBFilter or thresholdRsrqIFLBFilter should be configured16FeatureIntra ENB Interfrequency Load BalancingRL40What is the benefit of Interfrequency load balancingAbility to optimally balance cell load between freqeuncy layers 17FeatureVOLTERL40What parameter is used to enable support for conversation voice bearersactConvVoice(LNBTS)

18FeatureROHCRL40What are the different ROHC operation modesThere are 3 modes of operations 1. Unidirectional, 2. Bidirectional -Optimistic and 3.Bidirectional -Reliable19FeatureROHCRL40What is the parameter to activate robust header compressionactPdcpRohc(LNBTS)20FeatureControlled UL Packet SegmentationRL40What is the main benefit for controlled UL packet segmentationExtend the UL coverage and therefore to increase the UL cell edge performance