Recent posts under tag ims

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Local breakout is configured and VPLMN flag is enabled in HSS, still some subscribers using Home PGW for IMS APN.

posted Aug 17, 2022 by Sunil Khandelwal

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How does SMS call flow works in 5G?Is this same as SMS over IP or IMS?

posted Oct 15, 2020 by Akhilesh

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What is SIP 500 internal Error means?

posted Mar 12, 2020 by Akhilesh

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Can we establish VOLTE call in Scell?

posted Mar 5, 2020 by Himani

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Does RTP traffic flows If we keep VOLTE call in Mute State?

posted Feb 20, 2020 by Jaganathan

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How the preemption works in volte network?

posted Jul 26, 2019 by anonymous

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SMS over IMS?

posted Jun 4, 2019 by Sumith Singh

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How does IMS protocol works?Is this same as VOIP ?

posted May 28, 2019 by Bharat Kumar

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Can we establish IMS session via Internet connection?

posted Apr 30, 2019 by Himani

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volte call failed with Unknown NAS message

posted Mar 19, 2019 by Sivakumar.d

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IMS : What IBCF does in IMS network and when it becomes mandatory to be present in network ?

posted Jan 4, 2019 by Vikram Singh

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VoLTE: How does voice call establish when one party using VoLTE technology and the other one using 2G ?

posted Jan 1, 2019 by Vikram Singh

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In IMS VoLTE call, how to identify IPs assigned to phone numbers from control traffic (SIP, SDP …)?

posted Dec 6, 2018 by anonymous

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Does HO possible in emergency call?

posted Aug 30, 2018 by Jaganathan

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IMS: How does S-CSCF locate PGW for a terminating VoLTE call ?

posted Jul 28, 2018 by Harshita

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VoLTE in LBO: Number translation

posted May 22, 2018 by Michael Semama

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SIP response 380 "Alternative service"

posted May 22, 2018 by Michael Semama

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IMS Mobile termanated call to CS network

posted May 2, 2018 by Michael Semama

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"Homogeneous Support of IMS Voice Over PS Sessions" in S6a ULR

posted Apr 23, 2018 by Michael Semama

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LTE: Is it necessary to establish bearer with QCI "5" to support transmission of SIP signalling messages ?

posted Apr 13, 2018 by Harshita

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Which QCI bearer is used for IMS signalling ? [MCQ]

posted Dec 19, 2017 by Ganesh

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How ENB recognize incoming packet is voice packet or data packet?

posted Nov 10, 2017 by Rohit Verma

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Why QCI 9 and QCI 5 are always established and deactivated together?

posted Nov 5, 2017 by Faisal Adeem Siddiqui

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LTE: Is it possible without having IP from default bearer, UE can make IMS call ?

posted Sep 22, 2017 by Harshita

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Why IMS required separate PDN?Why cant default PDN controls voice data?

posted Sep 18, 2017 by Sakshi Rai

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VOLTE: IFC (Initial Filter Criteria)

posted Sep 12, 2017 by Michael Semama

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VOLTE: Location information in S8HR

posted Sep 12, 2017 by Michael Semama

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How to decrease IMS/Volte call set up time?

posted Sep 5, 2017 by Shyam Singh Pal

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VOLTE and SIP/IMS are the same technology or VOLTE is like normal 2G call?

posted Aug 21, 2017 by Rohit Verma

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Why Packet error loss rate is allowed more for conversational voice in QCI table?

posted Aug 18, 2017 by Rohit Verma

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What is the use of flow label field in SIP header?

posted Aug 17, 2017 by Rohit Verma

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When i make whatsapp call or IMO call will it go via SIP protocol or different protocol?

posted Aug 17, 2017 by Rohit Verma

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SIP/IMS layer is application layer or LTE protocol layer?

posted Aug 16, 2017 by Rohit Verma

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Multiple MSCC blocks sequence?

posted Jun 19, 2017 by Bhushan Patil

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How to config Nokia FL15 VoLTE/IMS when changing MCC-MNC?

posted Jun 7, 2017 by anonymous

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What is SIP signalling in QCI table?Why it is needed in LTE?

posted May 22, 2017 by Dheerendra

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PSI of the SC of the SM-over-IP sender. What is PSI and SC here?

posted Apr 9, 2017 by Sneha Maganahalli

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QCI 5 is mandatory for IMS SIP Signalling?

posted Apr 3, 2017 by Anand Yadav

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MT Call from 2G/3G to VoLTE User

posted Apr 1, 2017 by Anand Yadav

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Can a VoLTE Call Data flow on IMS Default Bearers?

posted Apr 1, 2017 by Anand Yadav

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How voice packets flows through IMS network and reach to end user?

posted Feb 28, 2017 by anonymous

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What is the transport layer usually used for the SIP protocol in Volte (UDP/TCP/SCTP)?

posted Feb 27, 2017 by Michael Semama

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LTE: How many types of charging scenarios come under the online charging system ?

posted Feb 25, 2017 by Vikram Singh

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LTE: Which network element is configured to change the grace period of a call/subscription ?

posted Feb 25, 2017 by Vikram Singh

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LTE: How P-CSCF select S-CSCF to send SIP invite request receives from UE ?

posted Feb 25, 2017 by Vikram Singh

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IMS: What is the role of IMS gateway function in IMS network and which all nodes in network interface towards it ?

posted Feb 24, 2017 by Vikram Singh

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what are the Online Charging parameters for IMS calls (VoLTE)?

posted Feb 23, 2017 by Gurusamy Narayanaswamy

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What is the difference between user and subscription in IMS?

posted Feb 17, 2017 by Jim Tan

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Multiple IMS registration requests with nounce value

posted Feb 11, 2017 by Tejas Shinde

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what does it mean if SIP SUBSCRIBE Method includes event as "reg"?

posted Dec 25, 2016 by Vinay Kumar Tokala