What is CSFB and SRVCC in LTE?
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11
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43662
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December 18, 2023
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What are the reason Blocked Call Caused "SIP invite failure" in VoLTE?
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18
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2837
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April 15, 2024
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VoLTE Mute
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27
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5836
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April 4, 2024
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How to switch your career from a Core telecom professional to a Cloud professional
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7
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5266
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October 19, 2021
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When VoLTE Call (QCI1-2-5) and Data Session (QCI6-9) established in LTE, at which point allocation of QCI done?
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8
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4583
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March 24, 2022
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Why does invite not received at MT during drive test if handover are happening?
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1
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45
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March 14, 2024
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Favorites
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1
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5707
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July 3, 2021
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When default bearer of IMS signaling is released in VoLTE call?
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35
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5973
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February 18, 2024
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In which particular cases UE sends SIP 500 Sever Internal Error in Uplink during VoLTE call setup?
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23
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2488
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February 15, 2024
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VoWiFi: Why the ePDG is designed to be behind the PGW?
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69
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5188
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December 4, 2021
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VoLTE drops with Cause Value of Regular Deactivation
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2
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170
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January 27, 2024
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Why sometime when UE is in 3G we see SIP messages exchanged between UE and network?
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1
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242
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September 28, 2023
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High number of N.NsaDc.SgNB.Add.Fail.Radio.UeCapability in some cells
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29
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2664
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September 27, 2023
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How I-CSCF can get S-CSCF address?
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4
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236
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September 12, 2023
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Does UE need to indicate FGI bit 3,7 as supported for SMS over IMS?
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19
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1571
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September 11, 2023
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What can be the reason of UE sending bye message with cause code DRB lost?
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3
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406
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August 31, 2023
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What does drop type 'SIP Bye Request' in tems mean?
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56
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6687
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June 13, 2023
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VoLTE block call due to SIP 500 Internal server error
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3
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1967
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June 2, 2023
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SIP message 401 unauthorized, call drop event
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30
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7944
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June 17, 2020
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How will UE shift its codec from EVS to AMR and AMR to EVS?
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16
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3707
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May 11, 2023
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Possible reasons for "SIP Cancel" during call setup failure cases
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4
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2393
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April 27, 2023
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VoLTE Features Discussion
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5
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5905
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April 16, 2023
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Details of SIP response codes
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3
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1339
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April 4, 2023
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What is an ideal CST of VoLTE call?
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14
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6583
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February 16, 2023
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Is there a 3GPP mentioning that if there is no TAU update UE cannot initiate a service?
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31
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2090
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January 18, 2023
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IMS, VoLTE and Vo5G (VoNR)
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0
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1084
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June 29, 2022
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What could be the possible causes of SIP Precondition Failures?
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0
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333
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November 3, 2022
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What happens to call on 5G SA if 404, 500 error code received?
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2
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758
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October 15, 2022
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Handsets reporting wrong MNCs issue
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3
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293
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October 15, 2022
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Some queries on VoNR
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12
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2252
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October 12, 2022
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