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Questions and Answers
Which network technology is required to support VoIP calls over an LTE network?
Which network technology is required to support VoIP calls over an LTE network?
- Wi-Fi
- GSM
- CDMA
- IMS (correct)
What is used to maintain call continuity from IMS to the CS domain when a UE with an active VoIP call leaves LTE coverage?
What is used to maintain call continuity from IMS to the CS domain when a UE with an active VoIP call leaves LTE coverage?
- eNodeB
- SRVCC (correct)
- SGW
- PGW
Which network component is responsible for managing mobility in an LTE network?
Which network component is responsible for managing mobility in an LTE network?
- MME (correct)
- PGW
- eNodeB
- SGW
What is the function of the Serving Gateway (SGW) in the VoLTE architecture?
What is the function of the Serving Gateway (SGW) in the VoLTE architecture?
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Which network component is responsible for packet data in the VoLTE architecture?
Which network component is responsible for packet data in the VoLTE architecture?
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Study Notes
Supporting VoIP Calls in LTE Network
- VoLTE (Voice over LTE) technology is required to support VoIP calls over an LTE network.
Maintaining Call Continuity
- When a UE with an active VoIP call leaves LTE coverage, the mechanism used to maintain call continuity from IMS to the CS domain is called Single Radio Voice Call Continuity (SRVCC).
Mobility Management
- The network component responsible for managing mobility in an LTE network is the Mobility Management Entity (MME).
Serving Gateway (SGW) Functionality
- The Serving Gateway (SGW) manages and forwards user data packets in the VoLTE architecture.
Packet Data Management
- The Packet Data Network Gateway (PDN GW) is responsible for packet data in the VoLTE architecture.
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