Most answered questions under tag sip

0 votes

2 answers

How UE distinguish incoming packet (from UE upper layer not from ENB) is SIP data or something else packet?

posted Aug 16, 2017 by Rohit Verma

+2 votes

2 answers

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

posted May 22, 2017 by Dheerendra

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

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

+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

+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

+6 votes

2 answers

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

posted Nov 25, 2015 by Alok

+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

+1 vote

1 answer

What is SIP 500 internal Error means?

posted Mar 12, 2020 by Akhilesh

+1 vote

1 answer

Can we establish VOLTE call in Scell?

posted Mar 5, 2020 by Himani

+2 votes

1 answer

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

posted Jul 28, 2018 by Harshita

+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

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

+1 vote

1 answer

VOLTE: Location information in S8HR

posted Sep 12, 2017 by Michael Semama

–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

+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

+1 vote

1 answer

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

posted Aug 16, 2017 by Rohit Verma

+1 vote

1 answer

QCI 5 is mandatory for IMS SIP Signalling?

posted Apr 3, 2017 by Anand Yadav

+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

1 answer

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

posted Dec 25, 2016 by Vinay Kumar Tokala

0 votes

1 answer

SIP install error on windows using python 32bit?

posted Dec 12, 2016 by anonymous

+2 votes

1 answer

Can there be two trf uri in Feature-Cap header ?

posted Aug 18, 2016 by Vikas Upadhyay

0 votes

1 answer

SIP: When does proxy server initiate authentication/authorization for the received INVITE request ?

posted Aug 18, 2016 by Neelam

+1 vote

1 answer

SIP: What is the significance of presence of CSeq header filed in request message ?

posted Aug 17, 2016 by Ganesh

0 votes

1 answer

function and differences between record route header and route header in SIP

posted Aug 15, 2016 by anonymous

+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

+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

+1 vote

1 answer

IMS: When the following response codes are used during an established IMS call session ?

posted Aug 1, 2016 by Ganesh

+1 vote

1 answer

From which layer of sip stack (transport layer, transaction layer or transaction user), sip messages get generated?

posted Apr 3, 2016 by anonymous

+2 votes

1 answer

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

posted Dec 7, 2015 by Harshita

+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

1 answer

What are all identifiers used for an UE in IMS network ?

posted Nov 7, 2015 by Harshita

+3 votes

1 answer

IMS : Why P-CSCF node can not send message directly to S-CSCF ?

posted Oct 29, 2015 by Alok

+1 vote

1 answer

Minimum set of required protocols for SIP calls?

posted Sep 6, 2014 by anonymous

0 votes

1 answer

Can we use sip client with stateless proxy?

posted Jun 25, 2014 by anonymous

+3 votes

1 answer

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

posted Jun 11, 2014 by Vimal Kumar Mishra

+1 vote

1 answer

What if during the Incoming Call Screening the originating UE identity is hidden?

posted Jun 10, 2014 by Kapil Kapoor

+3 votes

1 answer

How the Forking flow goes in the Network?

posted May 23, 2014 by Sandeep Otari

+1 vote

1 answer

LTE: Can someone please share SIP call flow through the lte network ?

posted Mar 30, 2014 by Vimal Kumar Mishra

+6 votes

1 answer

What are the messages or commands SIP uses?

posted Nov 25, 2013 by anonymous

+6 votes

1 answer

Usage of SS7, H.323 and SIP in VOIP network ?

posted Nov 23, 2013 by anonymous

+1 vote

1 answer

SRTP master key determination is through configurations at the end points? or through SDP exchanges?

posted Jul 16, 2013 by Ashish Suchdev

+1 vote

0 answers

What if the Caller doesn't receive the SIP_PRACK/OK message from receiver ?

posted Mar 13, 2020 by Ankit Mishra

0 votes

0 answers

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

posted Feb 20, 2020 by Jaganathan

0 votes

0 answers

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

0 votes

0 answers

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

posted Dec 6, 2018 by anonymous

0 votes

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

posted Dec 19, 2017 by Ganesh

0 votes

0 answers

VOLTE: IFC (Initial Filter Criteria)

posted Sep 12, 2017 by Michael Semama

+1 vote

0 answers

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

posted Aug 17, 2017 by Rohit Verma