Content for TS 33.127 Word version: 18.8.0
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6.4 3G p. 73
The present document does not specify LI functionality for 3G / UMTS. LI capabilities for 3G / UMTS for this release are specified in TS 33.107.
6.5 VoNR p. 73
Voice over NR as defined in TS 23.501 and TS 23.502 is intended to provide equivalent functionality to VoLTE in 4G.
LI requirements for VoNR based on IMS are defined in clause 7.4 of the present document.
6.6 4G/5G Interworking p. 74
Figure 6.6-1 depicts interworking between EPC and the 5G architecture. The network functions are depicted in grey, while the LI elements are depicted in blue.
