Re: A confusion on the structure of vocal

Hi Raghavan,

Thank you very much! The call statefull in your reply means that the applications
will record the call information, right? In fact, I am trying to make clear the
difference between Transaction and call. From you reply, I know, the transaction
is related to SIP stack while the call is related to applications, right?

>From RFC3261, A transaction comprises all messages from the first request sent
from the client to the server up to a final (non-1xx) response. I think this
explanation is very clear. But the call: A call is an informal term that refers to
some communication between peers, generally set up for the purposes of a
multimedia conversation. I cannot imagine the scene of a call very well. Will a
call include serveral transactions?

Thanks again!
Regards,
Zhenyu

>From: Ragh Kripa <[email protected]>
>Reply-To: Ragh Kripa <[email protected]>
>To: Zhenyu Wu <[email protected]>
>Subject: Re: [Vocal] A confusion on the structure of vocal
>Date:Fri, 17 Jun 2005 07:49:35 -0700
>
>Hi Zhenyu,
>
>Applications such as redirect server, marshal server are call
>stateless.  SIP stack is sip transaction statefull.  B2bua is call
>statefull.
>
>Marshall server can be used to timestamp start and end of calls.  
>
>Hope this helps
>
>Raghavan
>
>
>
>On 6/16/05, Zhenyu Wu <[email protected]> wrote:
>> Hello,
>> 
>> I am analysing the structure of Vocal source code, but there is a confusion,
can
>> anyone give me any infomation? Thanks in advance.
>> 
>> We know, in vocal, there are a series of files which are about SIP
transaction,
>> for example, SipTransactionDB, SipTransactionGC, and so on. Of course, these
files
>> offer interface between UA and sipstack. But, we know, a SIP server will keep
>> millions of calls information in practice, so, I want to know which part of
the
>> code offers this function which can record the call information, transaction?
>> 
>> Thanks,
>> Regards,
>> Zhenyu
>> 
>> 
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