[SIPForum-discussion] Issue in Initiation/Termination of callwith De-Registered User

Tue May 1 17:23:51 UTC 2007

You will want to authenticate the invite requests (beyond just the
anonymous calls you mention below) to avoid fraud.

If you are getting the calls from a trusted domain, then you are
implicitly stating that you trust the information provided by the entity
that is accepting calls in that domain (that trusted domain should
authenticate the end user's calls anyway - i.e. they are performing the
invite authentication instead of you).

Peter

________________________________

From: Surya Prakash Ummadi [mailto:suryaprakashu at rediffmail.com] 
Sent: Tuesday, May 01, 2007 10:44 AM
To: Brecl, Peter
Cc: discussion at sipforum.org; Raghu Narasimhan; reliagility at gmail.com
Subject: Re: Re: [SIPForum-discussion] Issue in Initiation/Termination
of callwith De-Registered User

Hi peter,
    If the autentication is not enabled or call is getting from the
trusted domain,then call is not authenticated,in the case,how charging
is done?

As per my understanding,Registration is the currently available location
of the user.If the caller is making a call with out registration then
call will be charged based on the subscriber data available at the
service provider. 
CDR's which are used for the generation of the billing will contain the
>From header ,from where the call is intiated and billing is not done
based on the contact of that user.

Authentication is useful when the  Anonymous call is made,where the user
doesn't want to reveal his identity,in this scenario,the From header is
anonymous,based on the p-asserted identity the call will be charged.

please comment.

surya 

On Tue, 01 May 2007 Brecl,Peter wrote :
>The user would still need to get authenticated when it sends out the
>INVITE. If the authentication for the INVITE passes (it uses the same
>credentials as the authentication pwd for registrations), you would
>accept the request for the outbound call and bill based on the billing
>record created by that call.
>
>Peter
>
>-----Original Message-----
> From: discussion-bounces at sipforum.org
>[mailto:discussion-bounces at sipforum.org] On Behalf Of Raghu Narasimhan
>Sent: Tuesday, May 01, 2007 8:40 AM
>To: reliagility at gmail.com
>Cc: discussion at sipforum.org
>Subject: Re: [SIPForum-discussion] Issue in Initiation/Termination of
>callwith De-Registered User
>
>doesn't everything go haywire then ? un-regged user makes call.. who
>gets charged ?
>
>On 5/1/07, Michael Cohen <reliagility at gmail.com> wrote:
> > Hi all.  It is my understanding that the purpose of registration is
so
>that
> > the registered UA can receive incoming calls.
> >
> > There is nothing to prevent an unregistered user from calling a
>registred
> > user.
> >
> > In fact, if a user-agent does not plan on receiving calls there is
no
>reason
> > for it to be registered.
> >
> > If you dont want an _unauthorized_ user-agent to be able to call a
> > registered user-agent, you can  turn on invite authentication, if
your
>proxy
> > supports it.
> >
> > -Mike
> >
> >
> > On 5/1/07, santosh patra <skp10_9559 at yahoo.co.in> wrote:
> > >
> > >
> > >
> > > Yes Raghu...He should get 403 client error but in this case call
is
> > getting eastblished.
> > > And As far as my experience says call should not established and
>That's
> > why basically I asked is there any such there implementation, which
>case I
> > have not come across?
> > >
> > >
> > > ----- Original Message ----
> > > From: Raghu Narasimhan <raghu.united at gmail.com>
> > > To: raman kumar < ramank24 at gmail.com>
> > > Cc: santosh patra < skp10_9559 at yahoo.co.in>;
discussion at sipforum.org
> > > Sent: Tuesday, 1 May, 2007 1:07:27 PM
> > > Subject: Re: [SIPForum-discussion] Issue in Initiation/Termination
>of call
> > with De-Registered User
> > >
> > >
> > >
> > > if de-registered user tries to initiate a call, should he not get
a
> > > 403 Forbidden ?
> > >
> > > On 5/1/07, raman kumar <ramank24 at gmail.com > wrote:
> > > > User A is sending his contact in the contact header but to know
>the
> > > > contact of the called party eg. user B in your case, it should
be
> > > > registered.
> > > >
> > > > See the Invite message generated by user A you will notice even
> > > > unregisterd it is sending its local contact in the contact
header.
> > > >
> > > >
> > > > On 30/04/07, santosh patra < skp10_9559 at yahoo.co.in> wrote:
> > > > > Hello All
> > > > >
> > > > > I am facing problem in the following scenario...So the
Scenario
>is,
> > > > >
> > > > > User A and B has registered in SIP server and expire header is
4
>hour
> > i.e.
> > > > > 14,600 seconds.
> > > > > User A has been deregistered with Expiry:0.
> > > > >
> > > > > case1:De-registered User A is trying to initiate a call to
>registered
> > User B
> > > > > and the call is getting success means User B is getting the
call
>and
> > Media
> > > > > path has also been estabilshing, Is the call should sucessful?
>If yes,
> > then
> > > > > how?
> > > > >
> > > > > but in Case2: when User B is trying to call De-registered user
A
>then
> > call
> > > > > is not successful and getting 4xx error response.
> > > > >
> > > > > Here I am getting confused that when User A has deregistered
> from
> > Registrar
> > > > > then there is no information of User A in Registrar and How
User
>A is
> > able
> > > > > to initiate a call with out registration?
> > > > >
> > > > > But RFC-3261 doesn't talk about initiation and Termination of
>call
> > after
> > > > > deregistering the user.
> > > > > If any RFC/standard says about such scenarios then please let
me
>know.
> > > > >
> > > > > Please help me on this Scenario.
> > > > >
> > > > > Thanks in Advance
> > > > > Santosh
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >      Send a FREE SMS to your friend's mobile from Yahoo!
>Messenger.
> > Get it
> > > > > now at http://in.messenger.yahoo.com/
> > > > _______________________________________________
> > > > This is the SIP Forum discussion mailing list
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> > > > Post to the list at discussion at sipforum.org
> > > >
> > >
> > >
> > > --
> > > Yours Truly
> > >
> > > Raghu Narasimhan
> > >
> > >
> > > ________________________________
> >  Check out what you're missing if you're not on Yahoo! Messenger
> > > _______________________________________________
> > > This is the SIP Forum discussion mailing list
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> > > Post to the list at discussion at sipforum.org
> > >
> > >
> >
> >
>
>
>--
>Yours Truly
>
>Raghu Narasimhan
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