[SIPForum-discussion] SIP billing confusion

Eric Burger eburger at sipforum.org
Wed Jun 9 17:45:37 UTC 2010

And, answering the original question, there absolutely is no RFC describing when to charge, nor will there ever be. The IETF is about getting the endpoints to work. The IETF is not about business models.

This is very important to understand, because it means in an absolute sense there is no right time to start or end billing. All of the suggestions you have received on this list are very informed suggestions. The 3GPP document is the law for IMS implementations, but not for anything else.

On Jun 8, 2010, at 2:49 AM, Vivek Talwar wrote:

> Yes Billing should start @ Step 5 and stop @ step 6. You can refer 32.260 for IMS charging
> http://www.3gpp.org/ftp/Specs/html-info/32260.htm
> From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of shibli ahamed
> Sent: Tuesday, June 08, 2010 9:21 AM
> To: discussion at sipforum.org
> Subject: [SIPForum-discussion] SIP billing confusion
> please consider this sip call flow:
> A                                        B
> 01        INVITE
>      ----------------------------------->
> 02       100 TRYING
>     <------------------------------------
> 03       180 Ringing
>     <------------------------------------
> 04       200OK With SDP
>    <----------------------------------------
> 05       ACK
>    ------------------------------------------>
> 06             BYE
>    <------------------------------------------
> 07           200 OK
>    ------------------------------------------->
> Query:
> 1. Is there any rfc recommendation when to start bill and stop it, some says its start after 4 and stop at 06 some says its start after 5 and stop at 7?
> 2. is it ok if someone start bill after 05 and stop after 06?
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