[Serusers] HELP: how to get correct call duration??

[Charles Wang]

Mohammad,

When a caller send an INVITE to SER, the INVITE message will not be
written to DB.
I find that the INVITE written to DB is when the callee answers this call.
So, the INVITE (in DB) is a correct timestamp.

In another word, the call duration is correct.

On 4/29/05, Mohammad Khan <info at beeplove.com> wrote:
> You are welcome.
> Also let me know, if you find anything new.
> 
> Thanks,
> Mohammad
> 
> Charles Wang wrote:
> 
> >really? it is an interesting result. i think i will do the same
> >testing follow your steps,
> >thank you very much, Mohammad.
> >
> >On 4/28/05, Mohammad Khan <info at beeplove.com> wrote:
> >
> >
> >>Yes, I also did a ngrep capture and took a close look.
> >>But what is the sip_method here? (when it send 200 OK)
> >>How do you capture it to acc?
> >>
> >>I did another experiment.
> >>I called from  UA1 to UA2 . and let UA2 rang for half minute.
> >>And then UA2 picked the call and after couple of seconds disconnect the
> >>call.
> >>After this I found the time difference between INVITE 200 and ACK 200 is
> >>not half minutes.
> >>Strange thing is, they both have same time and same timestamp. And BYE
> >>have time that tells call duration was only few seconds
> >>
> >>
> >>Thanks,
> >>Mohammad
> >>
> >>Charles Wang wrote:
> >>
> >>
> >>
> >>>Mohammad:
> >>>
> >>>I trace the packet with ethereal and find ser will send "INVITE" to callee.
> >>>The "100 Trying" and "180 ringing" will be send from callee to ser if
> >>>callee receives "INVITE".
> >>>And the callee will respone a "200 OK" after callee hangup. I think
> >>>this "200 OK"
> >>>is the callee hangup at this moment.
> >>>
> >>>On 4/28/05, Mohammad Khan <info at beeplove.com> wrote:
> >>>
> >>>
> >>>
> >>>
> >>>>Yes, the duration of call should be just the way you said.
> >>>>But I am not aware about any UA can send msg back to other UA right
> >>>>after pick up the call.
> >>>>
> >>>>I just use the following query to get successfull calls
> >>>>select sip_callid from acc where sip_status=200 group by sip_callid
> >>>>having count(*) = 3;
> >>>>
> >>>>If you know the way to get exact call duration, please share with me.
> >>>>I know, the way I am doing it is couple of seconds more than the actual
> >>>>duraion.
> >>>>
> >>>>Thanks,
> >>>>Mohammad
> >>>>
> >>>>
> >>>>Charles Wang wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Hi,
> >>>>>
> >>>>>I think that the ACK after INVITE is only the callee(UAC) receives my
> >>>>>INVITE and ready to start RINGING. But this time is not the really
> >>>>>Call Start.
> >>>>>Generally, the start time of call should be callee hangup the phone
> >>>>>after ringing.
> >>>>>Do you have any idea about it?
> >>>>>
> >>>>>On 4/28/05, info at beeplove.com <info at beeplove.com> wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Actually, to get call duration, you need to use ACK and BYE (both should
> >>>>>>have status 200).
> >>>>>>INVITE sends an request to other party to initiate a call.
> >>>>>>Other party send ACK with status 200 to receive the call.
> >>>>>>
> >>>>>>Original Message:
> >>>>>>-----------------
> >>>>>>From: Charles Wang lazy.charles at gmail.com
> >>>>>>Date: Thu, 28 Apr 2005 02:49:42 +0800
> >>>>>>To: serusers at lists.iptel.org
> >>>>>>Subject: [Serusers] HELP: how to get correct call duration??
> >>>>>>
> >>>>>>
> >>>>>>Hi, ALL:
> >>>>>>
> >>>>>>I know ser can insert INVITE & BYE records to acc table.
> >>>>>>Maybe the timestamp of BYE record is correct but the timestamp
> >>>>>>of INVITE is not equal to the call start(after the callee answered).
> >>>>>>Is there any method to generate a record with timestamp when the callee
> >>>>>>answer?
> >>>>>>I think that it should be the callee responses "200 OK" after "100 Trying".
> >>>>>>How to do it???
> >>>>>>
> >>>>>>--
> >>>>>>
> >>>>>>Best Regards
> >>>>>>Charles
> >>>>>>
> >>>>>>_______________________________________________
> >>>>>>
> >>>>>>
> 
> 


-- 

Best Regards
Charles