Most viewed questions under tag volte

+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

0 votes

1 answer

Why muting calls happens in VoLTE Network, what is the reason behind mute Calls and resolution for same?

posted Nov 2, 2017 by anonymous

+1 vote

2 answers

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

posted Nov 5, 2017 by Faisal Adeem Siddiqui

+2 votes

1 answer

What is the difference between ISIM and USIM in LTE/VoLTE?

posted Feb 8, 2016 by anonymous

+4 votes

1 answer

Differences between UMTS QoS and LTE QoS concepts and mechanisms?

posted Jan 30, 2014 by Mohamed Elwakiel

+1 vote

0 answers

SIP response 380 "Alternative service"

posted May 22, 2018 by Michael Semama

+3 votes

1 answer

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

posted Apr 23, 2018 by Michael Semama

+2 votes

1 answer

IMS: Function difference between MRFC and MRFP components of Media Resource Function ?

posted Dec 7, 2015 by Harshita

+6 votes

4 answers

VoLTE: Does a network need to establish a separate default bearer for IMS call ?

posted Oct 24, 2015 by Harshita

+2 votes

1 answer

Policy counter subscription by the PCRF to OCS

posted Dec 4, 2015 by Pdk

+1 vote

1 answer

VoLTE: Why UE is not sending PCO option in attach request?

posted Apr 14, 2015 by Alkesh Mehta

0 votes

0 answers

VOLTE: IFC (Initial Filter Criteria)

posted Sep 12, 2017 by Michael Semama

+3 votes

2 answers

SPS IN LTE in UL & DL , along with DS

posted Jan 14, 2014 by Luv Singh

+1 vote

1 answer

Differentiated paging for VoLTE

posted Jun 26, 2015 by anonymous

+1 vote

0 answers

What is RTP Gap? and how could we improve it?

posted Jul 23, 2018 by anonymous

+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

0 votes

2 answers

Can a VoLTE Call Data flow on IMS Default Bearers?

posted Apr 1, 2017 by Anand Yadav

+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

+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

0 votes

0 answers

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

1 answer

QCI 5 is mandatory for IMS SIP Signalling?

posted Apr 3, 2017 by Anand Yadav

0 votes

0 answers

Way of use Homogeneous Support of IMS Voice Over PS Sessions

posted Jun 3, 2020 by anonymous

+2 votes

1 answer

VoLTE : What are the roles for P-CSCF, I-CSCF and S-CSCF nodes during establishing voice call ?

posted Oct 22, 2015 by Harshita

+2 votes

3 answers

What is the advantage of using VoLTE and not useing CSFB?

posted Aug 20, 2014 by Yogeshwar Thakur

+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

+2 votes

0 answers

What is IP Multimedia core network subsystem flag in IMS signalling

posted Jun 14, 2016 by Yeshwanth

+6 votes

2 answers

IMS: Why is IP sec tunnel established between UE and P-CSCF ?

posted Nov 25, 2015 by Alok

+3 votes

1 answer

IMS: Does the PGW has static configuration of P-CSCF or dynamic ?

posted Jun 11, 2014 by Vimal Kumar Mishra

+2 votes

1 answer

During Roaming in Volte/IMS Home Network P-CSCF will be used or visited network?

posted May 15, 2014 by Pardeep Kohli

+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

+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

+3 votes

1 answer

VOLTE: How the VoLTE call establishes for LTE network and legacy network ?

posted Jan 19, 2016 by Vikram Singh

+3 votes

1 answer

WiFI calling over trusted(TWAG/S2a) network.

posted Apr 27, 2016 by Sarjit Singh

+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

0 votes

2 answers

VoLTE: How many maximum VoLTE calls can be supported at a cell that is deployed on 10 Mhz bandwidth and FDD mode ?

posted Sep 9, 2016 by Harshita

+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

+1 vote

2 answers

In SRVCC PS-CS initiated.Why not PS-PS voice calls in SRVCC as 3G network is there to support handover for packet call ?

posted Aug 30, 2017 by Mohit Mohan

+1 vote

3 answers

LTE: Is it necessary VoLTE call packets should use QCI 1 bearer for transmission ?

posted Mar 30, 2018 by Harshita

+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

+1 vote

0 answers

Difference between VoLTE,VoeLTE and VoNR

posted Nov 16, 2018 by Kapil Gupta

+4 votes

1 answer

LTE: Is there any option by which UE registers to LTE network for data and voice through 3G/legacy network?

posted Jun 10, 2017 by Harshita

+2 votes

0 answers

How VoLTE charging works?

posted Apr 8, 2016 by Chinmoy Padhi

+1 vote

0 answers

how to check the P-CSCF that is configured in the UE

posted Jun 20, 2017 by anonymous

+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

+5 votes

1 answer

How to achieve the best QoS for VOLTE?

posted Nov 22, 2013 by anonymous

+1 vote

1 answer

TAU after csfb call end

posted Sep 23, 2018 by Raj

+1 vote

1 answer

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

posted Sep 18, 2017 by Sakshi Rai

+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

+1 vote

0 answers

MT Call from 2G/3G to VoLTE User

posted Apr 1, 2017 by Anand Yadav

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