Unanswerd questions 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

+1 vote

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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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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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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

+1 vote

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VoLTE in LBO: Number translation

posted May 22, 2018 by Michael Semama

+1 vote

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SIP response 380 "Alternative service"

posted May 22, 2018 by Michael Semama

+1 vote

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IMS Mobile termanated call to CS network

posted May 2, 2018 by Michael Semama

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

posted Dec 19, 2017 by Ganesh

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VOLTE: IFC (Initial Filter Criteria)

posted Sep 12, 2017 by Michael Semama

+2 votes

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How to decrease IMS/Volte call set up time?

posted Sep 5, 2017 by Shyam Singh Pal

+1 vote

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

posted Aug 17, 2017 by Rohit Verma

+1 vote

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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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Multiple MSCC blocks sequence?

posted Jun 19, 2017 by Bhushan Patil

+1 vote

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

posted Jun 7, 2017 by anonymous

+1 vote

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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

+1 vote

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MT Call from 2G/3G to VoLTE User

posted Apr 1, 2017 by Anand Yadav

+2 votes

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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

+2 votes

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What is the difference between user and subscription in IMS?

posted Feb 17, 2017 by Jim Tan

+3 votes

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Multiple IMS registration requests with nounce value

posted Feb 11, 2017 by Tejas Shinde

+1 vote

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Hi what are the customer facing KPI for 3G and LTE ? Means how to check the customer experience for 3G and 4G users ?

posted Sep 21, 2016 by Dipanshu Kulshrestha

+1 vote

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LTE to EHRPD call flow: Can anyone provide me information regarding call process from LTE to EHRPD?

posted Aug 9, 2016 by Arijit Chakraborty

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VoLTE: At which stage of SIP registration, P-CSCF establishes secure IP connection with UE ?

posted Aug 5, 2016 by Ganesh

+2 votes

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SIP: What is the functionality of ENUM node that residents in the SIP network ?

posted Aug 3, 2016 by Ganesh

+3 votes

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IMS: In what scenarios, an UE (IMS client) sends subscribe message to IMS server and when server notify UE ?

posted Jul 31, 2016 by Ganesh

+2 votes

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Does UE provides authentication schemes(NBA,GBA) when sending IMS register request ?

posted Jul 29, 2016 by anonymous

+1 vote

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LTE: How does VoLTE work and what all signalling messages have been defined for this feature ?

posted Jun 17, 2016 by Harshita

+2 votes

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How VoLTE charging works?

posted Apr 8, 2016 by Chinmoy Padhi

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VoLTE : In what terms, voice call quality differ from 2G/3G to LTE ?

posted Jan 4, 2016 by Harshita

+4 votes

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IMS : How does charging work in case of IMS based services ?

posted Dec 21, 2015 by Harshita

+4 votes

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VoLTE Emergency EPC wireshark logs required

posted Dec 19, 2015 by Alkesh Mehta

+1 vote

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Mobile is sending the SIP Registration request and the N/w responds with the "405 Method not involved"

posted Sep 2, 2015 by Pdk

+1 vote

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What is speech path in case "UE 4G - UE 4G" call in the same network?

posted Jun 16, 2015 by anonymous