[SIPForum-discussion] Any method to Cancel the REGISTERATION ?

[Venkatesh G]

Hi Akshat,

     In my case, SIP Phone does not know when to send
the second REGISTER ( before expiry of timer of First
REGISTER ). Only secondary server knows. I need a
message which can be sent from SERVER to SIP Phone to
DE-REGISTER the SIP Phone before the expiry of timer.

Thanks & Regards
Venkat
--- Akshat Prakash <akshat.prakash at gmail.com> wrote:

> Venkatesh G wrote:
> > Hi Ravi,
> >
> >        Thanks for your response. But my problem
> is,
> > SIP phone need a message before expiry of timer.
> Let
> > me explain you in detail.
> >
> > 1.SIP Phone has primary server and Backup server.
> >
> > 2.When the IP link is down between SIP phone and
> > Primary server, SIP phone sends REGISTER request
> to
> > backup server and Backup server responds with 200
> ok.
> > Registration done at this time.
> >
> > 3. BEFORE EXPIRY TIMER IS OVER, if the IP link
> between
> > SIP phone and Primary server came up, SIP phone
> has to
> > de-register to Secondary server and should
> register to
> > Primary server.
> >   
> hi,
> 
> there are two simple ways in which you can
> deRegister from a registrar.
> 1. send a REGISTER request with
> CSeq: 2 REGISTER
> and
> Contact: <what you sent during 1st
> REGISTER>;expires=0
> 
> this will expire your registration on the server
> manually
> 
> 2. send a REGISTER request with
> CSeq: 2 REGISTER
> and
> Contact: *
> this will expire all registrations done from the
> given alias
> 
> cheers :)
> > 4. At this time, Secondary server has to send some
> > message to SIP phone to start REGISTRATION TO
> Primary
> > server. I want to know that is there any message
> > available.
> >
> > 5. If no message is possible, after expiry time is
> > over, SIP automatically triggers the registration
> to
> > Primary server. But, in this case, the problem is
> I
> > need to wait until EXPIRY time is over. I want to
> > avoid this waiting.
> >
> > If any idea will be helpful for me.
> >
> > Thanks & Regards
> > Venkat
> >
> >
> >
> > --- Ravi Siebel <ravi_siebel at yahoo.com> wrote:
> >
> >   
> >> Hi ,
> >>    
> >>   The back-up Sip server as you mentioned below
> can
> >> send the 200 Ok response once the expire timer
> get
> >> expired and parallely it should the delete the
> >> binding from Location Server.
> >>    
> >>   Once the SIP Phone received the 200 OK response
> >> for de-registration, it can intiate the REGISTER
> >> request towards the Primary Server.
> >>    
> >>   Regards,
> >>   Ravi
> >>
> >> Venkatesh G <g_venkat7 at yahoo.co.in> wrote:
> >>   Hi all,
> >>
> >> I need some information regarding SIP
> REGISTRATION.
> >>
> >> If you take Thomsom SIP phone, in its
> configuration,
> >> it has Primary SIP server and Backup SIP Server.
> >> Suppose it is REGISTERed to Backup SIP server, if
> >> this
> >> Backup SIP server wants to cancel this
> REGISTRATION,
> >> is there any message that can be sent by Backup
> SIP
> >> server to the SIP Phone so that SIP phone will
> >> register to Primary SIP server ?
> >>
> >> Thanks & Regards
> >> Venkat
> >>
> >>
> >> Get the freedom to save as many mails as you
> wish.
> >> To know how, go to
> >>
> >>     
> >
>
http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html
> >   
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> >>
> >>
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> 
> 



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