name: SRVCC
full_form: Single Radio Voice Call Continuity
context: The additional MM Context for SRVCC information element contains mobile station classmarks, supported codec list that are necessary for the AMF/MME/S4-SGSN to perform SRVCC as defined in 3GPP TS 23.216[ Single Radio Voice Call Continuity (SRVCC); Stage 2 ]  [43]. The coding of Mobile Station Classmarks and Supported Codec List fields include the IE value part as it is specified in 3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  [5]. Figure 8.90-1: Additional MM context for SRVCC For each of the Mobile Station Classmark 2, Mobile Station Classmark 3 and Supported Codec List parameters, if they are not available, then the associated length field shall be set to zero, and the particular parameter field shall not be present.
description: Single Radio Voice Call Continuity (SRVCC) is a procedure in mobile networks that enables seamless handover of voice calls between different radio access technologies, such as from LTE to UMTS or GSM. It ensures continuity of voice services during the handover process, allowing users to maintain their voice calls without interruption. SRVCC involves the exchange of specific information elements between network components, including mobile station classmarks and supported codec lists, which are crucial for performing the handover successfully.
explanation: SRVCC is classified as a Procedure because it describes a specific sequence of operations that need to be performed by the network components to achieve seamless voice call continuity during handovers. The context provided highlights the importance of exchanging specific information elements between network components, which is a key aspect of procedures in mobile networks.
section_title: 8.90 Additional MM context for SRVCC
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