[Serusers] call log and accounting for forwarded and referred calls

[Richard]

> -----Original Message-----
> From: Juha Heinanen [mailto:jh at tutpro.com]
> Sent: Tuesday, December 21, 2004 9:25 PM
> To: Richard
> Cc: serusers at lists.iptel.org
> Subject: [Serusers] call log and accounting for forwarded and referred
> calls
> 
> Richard writes:
> 
>  > When a SIP call is blind-transferred with REFER and forwarded with "302
>  > moved temporarily", UA would start a brand new call. The problem is how
> to
>  > log and account for their calls. For example, A calls B, B sends 302
> and
>  > uses C's number as contact. The new call is made from A to C. The call
> log
>  > would show it is from A to C. The call log should at least have an
>  > indication of B forwarding the call. Also B is supposed to pay the
bill.
> It
>  > is not A although the call log shows it is A to C. A has no knowledge
> that a
>  > toll call is made when calling B.
> 
> richard,
> 
> i disagree that in case of 302, b should pay the bill.  302 means "b has
> moved to c and it is up to you if you want to try this new uri".
> 
> if you want b to pay the bill, then b should configure ser to FORWARD
> the call to c, not to REDIRECT a to c.
> 

The issue is that A has no choice to be forwarded or not. When a 302 is
received by A, there is no option for A to continue or reject the call. In
this example, B (an IP phone) sets his phone forwarding to C which is a long
distance number. A is from PSTN. When A makes a call to B, B sends 302 to
the PSTN gateway. The gateway forwards the call to ser which routes it back
to C via the PSTN gatway. So in ser's call log, I see a call from A to C.
Apparently I can't charge A or C. Only B is in my domain. But B is not even
in the second call log. In my understanding, if B sets the forward setting
on his phone to a toll number, he should be the one paying the bill.

This also applies even if A is in my domain.

Cheers,
Richard