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Post under tag ims
Most voted questions under tag ims
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+6
votes
2
answers
LTE: How a LTE UE come to know whether LTE network supports IMS call or not ?
posted
Jul 28, 2016
by
Vikram Singh
lte
ims
enodeb
mme
+6
votes
2
answers
IMS: Why is IP sec tunnel established between UE and P-CSCF ?
posted
Nov 25, 2015
by
Alok
lte
volte
ims
sip
+6
votes
4
answers
VoLTE: Does a network need to establish a separate default bearer for IMS call ?
posted
Oct 24, 2015
by
Harshita
lte
ims
volte
+4
votes
1
answer
LTE: For the CS fall back what messages are exchanged between IMS, LTE and GSM nodes to continue VoLTE call ?
posted
Aug 23, 2016
by
Harshita
lte
volte
ims
ue
srvcc
+4
votes
2
answers
VoLTE: Why I-CSCF and S-CSCF has interface with the HSS and for what purposes it is used ?
posted
Aug 5, 2016
by
Ganesh
volte
lte
sip
ims
ue
+4
votes
0
answers
IMS : How does charging work in case of IMS based services ?
posted
Dec 21, 2015
by
Harshita
lte
charging
ims
+4
votes
0
answers
VoLTE Emergency EPC wireshark logs required
posted
Dec 19, 2015
by
Alkesh Mehta
lte
volte
ims
+4
votes
2
answers
Which node takes care of VoLTE charging ?
posted
Oct 27, 2015
by
Harshita
volte
ims
lte
+4
votes
1
answer
Is there any role of HSS while establishing voice call using IMS in lte network ?
posted
Oct 11, 2014
by
Harshita
lte
ims
+3
votes
1
answer
"Homogeneous Support of IMS Voice Over PS Sessions" in S6a ULR
posted
Apr 23, 2018
by
Michael Semama
lte
mme
volte
ims
ue
+3
votes
2
answers
LTE: How many types of charging scenarios come under the online charging system ?
posted
Feb 25, 2017
by
Vikram Singh
ims
charging
diameter
lte
interview questions
+3
votes
0
answers
Multiple IMS registration requests with nounce value
posted
Feb 11, 2017
by
Tejas Shinde
lte
ims
volte
ue
+3
votes
1
answer
what does it mean if SIP SUBSCRIBE Method includes event as "reg"?
posted
Dec 25, 2016
by
Vinay Kumar Tokala
sip
ims
+3
votes
0
answers
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
ims
lte
ue
sip
+3
votes
1
answer
What is meant by NASS bundled authentication scheme, gprs ims bundled authentication scheme, sip digest auth scheme?
posted
Jul 27, 2016
by
Vakati Abilasn
lte
ims
+3
votes
1
answer
VOLTE: How the VoLTE call establishes for LTE network and legacy network ?
posted
Jan 19, 2016
by
Vikram Singh
volte
ims
lte
+3
votes
1
answer
How many types of application servers are defined by IMS architecture ?
posted
Dec 6, 2015
by
Neeraj Mishra
lte
ims
+3
votes
1
answer
LTE: Why does need a bearer of QCI 5 to exchange SIP signalling messages ?
posted
Dec 4, 2015
by
Ganesh Kumar
lte
ims
volte
sip
+3
votes
1
answer
LTE: What is the role of Media Resource Function (MRF) and Application Server (AS) while establishing VoLTE call ?
posted
Dec 4, 2015
by
Ganesh Kumar
lte
volte
ims
media server
+3
votes
2
answers
Is it necessary HSS and S-CSCF both the nodes belongs to home network for an IMS call ?
posted
Nov 6, 2015
by
Vimal Kumar Mishra
lte
volte
sip
ims
+2
votes
1
answer
IMS: How does S-CSCF locate PGW for a terminating VoLTE call ?
posted
Jul 28, 2018
by
Harshita
lte
ims
sip
+2
votes
2
answers
How ENB recognize incoming packet is voice packet or data packet?
posted
Nov 10, 2017
by
Rohit Verma
lte
ue
enodeb
ims
+2
votes
0
answers
How to decrease IMS/Volte call set up time?
posted
Sep 5, 2017
by
Shyam Singh Pal
lte
volte
ims
srvcc
interview questions
+2
votes
2
answers
What is SIP signalling in QCI table?Why it is needed in LTE?
posted
May 22, 2017
by
Dheerendra
lte
ims
sip
+2
votes
1
answer
What is the transport layer usually used for the SIP protocol in Volte (UDP/TCP/SCTP)?
posted
Feb 27, 2017
by
Michael Semama
sip
lte
ims
volte
+2
votes
0
answers
LTE: Which network element is configured to change the grace period of a call/subscription ?
posted
Feb 25, 2017
by
Vikram Singh
lte
telecom
ims
charging
policy
+2
votes
0
answers
LTE: How P-CSCF select S-CSCF to send SIP invite request receives from UE ?
posted
Feb 25, 2017
by
Vikram Singh
sip
lte
interview questions
ims
ue
+2
votes
0
answers
what are the Online Charging parameters for IMS calls (VoLTE)?
posted
Feb 23, 2017
by
Gurusamy Narayanaswamy
lte
volte
charging
ims
+2
votes
0
answers
What is the difference between user and subscription in IMS?
posted
Feb 17, 2017
by
Jim Tan
lte
ims
+2
votes
2
answers
LTE: Why a separate default bearer is required to exchange SIP signalling messages between UE and IMS network ?
posted
Dec 20, 2016
by
Vikram Singh
lte
volte
sip
ue
ims
+2
votes
1
answer
Can there be two trf uri in Feature-Cap header ?
posted
Aug 18, 2016
by
Vikas Upadhyay
lte
ims
sip
3gpp
+2
votes
1
answer
IMS: How an LTE UE deregisters from the IMS network?
posted
Aug 7, 2016
by
Vikram Singh
lte
ims
ue
+2
votes
0
answers
VoLTE: At which stage of SIP registration, P-CSCF establishes secure IP connection with UE ?
posted
Aug 5, 2016
by
Ganesh
volte
lte
ims
sip
ue
+2
votes
0
answers
SIP: What is the functionality of ENUM node that residents in the SIP network ?
posted
Aug 3, 2016
by
Ganesh
sip
volte
ims
+2
votes
0
answers
Does UE provides authentication schemes(NBA,GBA) when sending IMS register request ?
posted
Jul 29, 2016
by
anonymous
lte
ims
+2
votes
0
answers
How VoLTE charging works?
posted
Apr 8, 2016
by
Chinmoy Padhi
volte
ims
charging
lte
diameter
+2
votes
1
answer
IMS: Function difference between MRFC and MRFP components of Media Resource Function ?
posted
Dec 7, 2015
by
Harshita
lte
ims
volte
media server
sip
+2
votes
1
answer
What are all identifiers used for an UE in IMS network ?
posted
Nov 7, 2015
by
Harshita
lte
volte
ims
sip
+2
votes
2
answers
Can someone share the call flow for SMS over LTE(IMS)?
posted
Aug 20, 2015
by
Sandeep Otari
lte
sms
ims
+2
votes
1
answer
LTE: Does IMS takes part in voice transmitting or is it omitted?
posted
Jul 23, 2015
by
anonymous
lte
ims
volte
+2
votes
1
answer
What's the purpose of these terms XML Document Management and XML Configuration Access Protocol ?
posted
May 23, 2014
by
Sandeep Otari
ims
lte
+2
votes
2
answers
Can someone please share a good link or good book to understand IMS stuff ?
posted
Sep 19, 2013
by
Ganesh Kumar
ims
+1
vote
0
answers
How does SMS call flow works in 5G?Is this same as SMS over IP or IMS?
posted
Oct 15, 2020
by
Akhilesh
lte
ue
ims
5g
+1
vote
1
answer
What is SIP 500 internal Error means?
posted
Mar 12, 2020
by
Akhilesh
lte
sip
ims
+1
vote
1
answer
Can we establish VOLTE call in Scell?
posted
Mar 5, 2020
by
Himani
lte
ims
sip
volte
+1
vote
0
answers
volte call failed with Unknown NAS message
posted
Mar 19, 2019
by
Sivakumar.d
volte
lte
ims
epc
mme
+1
vote
1
answer
Does HO possible in emergency call?
posted
Aug 30, 2018
by
Jaganathan
lte
ue
nr
ims
5g
+1
vote
0
answers
VoLTE in LBO: Number translation
posted
May 22, 2018
by
Michael Semama
lte
volte
ue
ims
epc
+1
vote
0
answers
SIP response 380 "Alternative service"
posted
May 22, 2018
by
Michael Semama
lte
volte
ue
ims
+1
vote
0
answers
IMS Mobile termanated call to CS network
posted
May 2, 2018
by
Michael Semama
lte
volte
ims
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