Transcription of VoLTE Implementation Guide
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VoLTE Implementation Guide
VoLTE Implementation Guide July 2020 GSM Association VoLTE Implementation Guide Page 2 of 21 VoLTE Implementation Guide 1 Introduction 3 Overview 3 Scope 3 References 4 2 Business Drivers 4 Business drivers of VoLTE on Home Network 4 Business Drivers for VoLTE Roaming 5 Customer Experience 5 Coverage 5 Possible Business Case Justifications (quick bullet points) 6 3 Selecting Roaming Partners - Handsets, Coverage, and Capacity Bands 7 Frequencies 7 Handsets 8 Device based Steering of Roaming 9 4 Billing Issues 9 Comparison of QCI-based charging and APN-based charging 9 Signalling 10 Retail Presentation 10 Billing from Home Network Elements 10 Time Zones 10 5 Technical Issues Important to Roaming Managers 11 Enable / Disable IMS-APN 11 IMS Registration 11 QCI Settings 12 GBR Configurations 12 Lawful Intercept 12 Single Radio Voice Call Co
Uplink (UL) operating band BS receive UE transmit Downlink (DL) operating band BS transmit UE receive Duplex Mode F UL_low – F UL_high F DL_low – F DL_high 1 1920 MHz – 1980 MHz 2110 MHz – 2170 MHz FDD 2 1850 MHz – 1910 MHz 1930 MHz – 1990 MHz FDD 3 1710 MHz – 1785 MHz 1805 MHz – 1880 MHz FDD
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