name: UTRA
full_form: UMTS Terrestrial Radio Access
context: Voice over UTRA PS HS Support Defines whether the UE supports IMS Voice in UTRA according to GSMA IR 58 profile. If UE supports E-UTRA and IMS voice in UTRA, UE also supports IMS voice in E-UTRA. If the UE supports IMS Voice in UTRA PS HS, then the UE shall also support the UM RLC re-establishment via reconfiguration. SRVCC Support from UTRA to UTRA Defines whether the UE supports SRVCC handover from UTRA PS HS to UTRA CS. SRVCC Support from UTRA to GERAN Defines whether the UE supports SRVCC handover from UTRA PS HS to GERAN CS. rSRVCC support from UTRA CS to E-UTRAN FDD Defines whether the UE supports rSRVCC handover from UTRA CS to E-UTRAN FDD. rSRVCC support from UTRA CS to E-UTRAN TDD Defines whether the UE supports rSRVCC handover from UTRA CS to E-UTRAN TDD.
description: UMTS Terrestrial Radio Access (UTRA) is a technology standard for radio access in Universal Mobile Telecommunications System (UMTS). It defines the protocols and procedures for communication between the User Equipment (UE) and the UMTS network. In the context of IMS Voice, UTRA supports voice services over packet-switched (PS) and circuit-switched (CS) domains, enabling features like Single Radio Voice Call Continuity (SRVCC) handovers between different radio access technologies.
explanation: UTRA is classified as a Technology because it defines the technical standards for UMTS radio access. The description emphasizes UTRA's role in supporting voice services and seamless communication across network domains, solidifying its position as a technological component.
section_title: 4.14a	IMS Voice Parameters
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