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LTE Call Flow - LTTS
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VoLTE Call Flow
A Brief Introduction to VoLTE Call Flow
LTE Network Architecture
Network Architecture
Ø UE: User Equipment
Ø E-UTRAN: Evolved UMTS Terrestrial Radio
Access Network.
Ø eNobeB (eNB): Evolved NodeB
Ø MME: Mobile Management Entity
Ø EPC: Evolved Packet Core
Ø SGW: Serving Gate Way
Ø PGW: Packet Gate way
Ø HSS: Home Subscriber Server
Ø PCRF: Policy & Charging Rule Function
Step 1
VoLTE UE attaches itself to the LTE network and establishes a default bearer for internet connection
Step 2
VoLTE Log Analysis
VoLTE UE establishes a default bearer for IMS signaling.
VoLTE Log Analysis
Step 3
VoLTE UE registers itself with IMS and subscribe for registration event.
VoLTE UE makes MO a VoLTE call.
Step 4
Credits
Made by - Shrishti Singh