1. Legend
   1. Cell / Radio Base Station (RBS)
      1. Orange
   2. MME
      1. Brown
   3. PEG
      1. Green
   4. Counter
      1. Yellow
   5. Comment
      1. White
   6. KPI
2. Call Setup
   1. Step 1. Random Access Success Rate
      1. Contention based Random Access Preamble Detected by Cell
         1. Attempts
            1. pmRaAttCbra
            2. Random Access Response
            3. Scheduled Transmission
            4. Success
            5. pmRaSuccCbra
            6. Random Access Success Rate
            7. pmRaAttCbra / pmRaSuccCbra
   2. Step 2. RRC Connection Setup
      1. RRC connection setup is triggered by RRF connection request message sent by UE
         1. RRC Attempts
            1. pmRrcConnEstabAtt
            2. Check avail licenses
            3. RCC Connection setup
            4. RRC Connection setup complete
            5. RRC Success
            6. pmRrcConnEstabSucc
            7. RRC Success Rate
            8. pmRrcConnEstabSucc / pmRrcConnEstabatt
            9. Special Success
            10. pmRrcConnEstabSuccHpa
            11. High Priority Success
            12. pmRrcConnEstabSuccEm
            13. Emergency Success
            14. Fails
            15. pmRrcConnEsabFailLic
            16. Special Attempts
            17. pmRrcConnEstabAttMod
            18. Mobile Originating Data
            19. pmRrcConnEstabAttMos
            20. Mobile Originating Signaling
            21. pmRrcConnEstabAttMta
            22. Mobile Terminating Access
            23. pmRrcConnEstabAttHpa
            24. High Priority Access
            25. pmRrcConnEstabAttEm
            26. Emergency
   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