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Post under tag ims
Most answered questions under tag ims
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+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
+1
vote
4
answers
The Role of DIAMETER in IMS?
posted
Jul 9, 2013
by
Salil Agrawal
diameter
lte
ims
+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
+1
vote
2
answers
Why QCI 9 and QCI 5 are always established and deactivated together?
posted
Nov 5, 2017
by
Faisal Adeem Siddiqui
lte
volte
ims
qci5
qci9
+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
0
votes
2
answers
Can a VoLTE Call Data flow on IMS Default Bearers?
posted
Apr 1, 2017
by
Anand Yadav
ims
lte
volte
ue
sip
+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
+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
+1
vote
2
answers
SIP: Does all the SIP control messages passes through SIP proxy-server or only a subset of SIP messages?
posted
Aug 14, 2016
by
Vikram Singh
sip
ims
voip
volte
interview questions
+1
vote
2
answers
SIP: Why does proxy server respond with 100 trying message ? What if it does not do this ?
posted
Aug 14, 2016
by
Vikram Singh
sip
ims
volte
voip
+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
+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
+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
+4
votes
2
answers
Which node takes care of VoLTE charging ?
posted
Oct 27, 2015
by
Harshita
volte
ims
lte
+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
0
votes
2
answers
Do we need a default bearer for IMS registration?
posted
Jun 17, 2015
by
anonymous
lte
ims
+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
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
0
votes
1
answer
How does IMS protocol works?Is this same as VOIP ?
posted
May 28, 2019
by
Bharat Kumar
lte
ue
ims
+1
vote
1
answer
Does HO possible in emergency call?
posted
Aug 30, 2018
by
Jaganathan
lte
ue
nr
ims
5g
+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
+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
+1
vote
1
answer
LTE: Is it necessary to establish bearer with QCI "5" to support transmission of SIP signalling messages ?
posted
Apr 13, 2018
by
Harshita
lte
ims
sip
interview questions
ue
0
votes
1
answer
LTE: Is it possible without having IP from default bearer, UE can make IMS call ?
posted
Sep 22, 2017
by
Harshita
lte
ims
volte
sip
mme
+1
vote
1
answer
Why IMS required separate PDN?Why cant default PDN controls voice data?
posted
Sep 18, 2017
by
Sakshi Rai
lte
ue
volte
ims
+1
vote
1
answer
VOLTE: Location information in S8HR
posted
Sep 12, 2017
by
Michael Semama
volte
ims
ue
sip
lte
–1
vote
1
answer
VOLTE and SIP/IMS are the same technology or VOLTE is like normal 2G call?
posted
Aug 21, 2017
by
Rohit Verma
lte
ims
ue
sip
+1
vote
1
answer
Why Packet error loss rate is allowed more for conversational voice in QCI table?
posted
Aug 18, 2017
by
Rohit Verma
lte
volte
sip
ims
+1
vote
1
answer
SIP/IMS layer is application layer or LTE protocol layer?
posted
Aug 16, 2017
by
Rohit Verma
lte
ims
sip
ue
+1
vote
1
answer
QCI 5 is mandatory for IMS SIP Signalling?
posted
Apr 3, 2017
by
Anand Yadav
lte
ims
volte
sip
qci
0
votes
1
answer
How voice packets flows through IMS network and reach to end user?
posted
Feb 28, 2017
by
anonymous
ims
volte
lte
+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
+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
+1
vote
1
answer
How to decide which attach type shall use when UE set “IMS PS Voice preferred and CS Voice as secondary”?
posted
Dec 16, 2016
by
Jim Tan
lte
csfb
ims
ue
+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
+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
0
votes
1
answer
SIP: When does proxy server initiate authentication/authorization for the received INVITE request ?
posted
Aug 18, 2016
by
Neelam
sip
interview questions
ims
+1
vote
1
answer
SIP: What is the significance of presence of CSeq header filed in request message ?
posted
Aug 17, 2016
by
Ganesh
sip
ims
0
votes
1
answer
function and differences between record route header and route header in SIP
posted
Aug 15, 2016
by
anonymous
sip
ims
+1
vote
1
answer
SIP: In what cases or scenarios, an user agent can send INVITE within an already established Dialog between UAC and UAS?
posted
Aug 14, 2016
by
Vikram Singh
sip
ims
interview questions
voip
+2
votes
1
answer
IMS: How an LTE UE deregisters from the IMS network?
posted
Aug 7, 2016
by
Vikram Singh
lte
ims
ue
+1
vote
1
answer
IMS: When a dedicated bearer is established for a VoLTE call and which node initiates it ?
posted
Aug 5, 2016
by
Ganesh
lte
ims
volte
ue
sip
+1
vote
1
answer
IMS: When the following response codes are used during an established IMS call session ?
posted
Aug 1, 2016
by
Ganesh
ims
sip
ue
volte
lte
+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
+1
vote
1
answer
How will UE use MCC MNC values (p-access-network-info header) in LTE-IMS integration?
posted
Feb 22, 2016
by
anonymous
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
+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
+3
votes
1
answer
How many types of application servers are defined by IMS architecture ?
posted
Dec 6, 2015
by
Neeraj Mishra
lte
ims
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