1. Legend
   1. Cell / Radio Base Station (RBS)
      1. Orange
   2. MME
      1. Brown
   3. KPI
      1. Green
   4. PEG
      1. Yellow
   5. Comment
      1. White
2. Call Setup
   1. Step 1. Random Access Success Rate
      1. Contention based Random Access Preamble Detected by Cell
         1. Random Access Response
            1. Scheduled Transmission
            2. PEGs
            3. Attempts
            4. pmRaAttCbra
            5. Success
            6. pmRaSuccCbra
            7. KPI
            8. Random Access Success Rate
            9. pmRaAttCbra / pmRaSuccCbra
   2. Step 2. RRC Connection Setup
      1. RRC connection setup is triggered by RRF connection request message sent by UE
         1. Check avail licenses
            1. RCC Connection setup
            2. RRC Connection setup complete
            3. PEGs
            4. RRC Attempts
            5. pmRrcConnEstabAtt
            6. pmRrcConnEstabAttEm
            7. Emergency
            8. pmRrcConnEstabAttHpa
            9. High Priority Access
            10. pmRrcConnEstabAttMta
            11. Mobile Terminating Access
            12. pmRrcConnEstabAttMos
            13. Mobile Originating Signaling
            14. pmRrcConnEstabAttMod
            15. Mobile Originating Data
            16. RRC Success
            17. pmRrcConnEstabSucc
            18. pmRrcConnEstabSuccEm
            19. Emergency Success
            20. pmRrcConnEstabSuccHpa
            21. High Priority Success
            22. Fails
            23. pmRrcConnEsabFailLic
            24. KPI
            25. RRC Success Rate
            26. pmRrcConnEstabSucc / pmRrcConnEstabatt
   3. Step 3. S1 Setup
      1. Signalling connection setup triggered by initial UE message
         1. MME sends initial context setup request to RBS
            1. PEGs
            2. Attempts
            3. pmS1SigConnEstabAtt
            4. Success
            5. pmS1SigConnEstabSucc
            6. KPI
            7. S1 Success Rate
            8. pmS1SigConnEstabAtt / pmS1SigConnEstabSucc
   4. Step 4. ERAB Establishment
      1. Initial ERAB setup by UE
         1. Check avail licenses
            1. RBS sends initial context setup response to MME
            2. PEGs
            3. Attempts
            4. pmErabEstabAttInit
            5. Avail per CQI
            6. Success
            7. pmErabEstabSuccInit
            8. Avail per CQI
            9. Fails
            10. pmErabEstabFailInitLic
      2. Additional ERAB setup by MME
         1. Check avail licenses
            1. RBS sends initial context setup response to MME
            2. PEGs
            3. Attempts
            4. pmErabEstabAttAdded
            5. Avail per CQI
            6. Success
            7. pmErabEstabSuccAdded
            8. Avail per CQI
            9. Fails
            10. pmErabEstabFailAddedLic
      3. KPI
         1. ERAB Attempts
            1. pmErabEstabAttInit + pmErabEstabAttAdded
         2. ERAB Successes
            1. pmErabEstabSuccInit + pmErabEstabSuccAdded
         3. ERAB Success Rate
            1. (pmErabEstabSuccInit + pmErabEstabSuccAdded) / (pmErabEstabAttInit + pmErabEstabAttAdded)
            2. Success / Attempts
3. Active Call
   1. Drop
      1. MME directed release
         1. Data in Buffer
            1. PEGs
            2. pmErabRelMmeAct
      2. RBS Triggered
         1. PEGs
            1. pmErabRelAbnormalEnb
      3. KPI
         1. Retainability
            1. (pmErabRelMmeAct + pmErabRelAbnormalEnb) / PMSESSIONTIMEUE
         2. ERAB Drop
            1. pmErabRelMmeAct + pmErabRelAbnormalEnb
   2. Handover
      1. Subtopic 1
   3. Volume
      1. Downlink
         1. KPI
      2. Uplink
   4. Throughput
      1. Time
         1. DL
            1. Must be an empty packet
            2. PEG
            3. pmUeThpTimeDl
         2. UL
            1. Must be an empty packet
            2. PEG
            3. pmUeThpTimeUl
   5. Latency
      1. Downlink
         1. Data arrives to RBS
            1. Is Buffer Empty
            2. Yes
            3. PEG
            4. pmPdcpLatPktTransDl
            5. Packet sent to UE
            6. PEG
            7. pmPdcpLatPktTimeDl
         2. KPI
            1. Latency
            2. pmPdcpLatPktTransDl + pmPdcpLatPktTimeDl