Re: [sipcore] Does SIP support "Reverse Charging" function?

Hi Paul,

I am agree with you that IETF do not care about the charging at function 
level. But other SIP based systems, such as IMS, usually do syntax level 
standardization for their SIP extension.

For example, the normal charging function defined in IMS, has it's syntax 
level standardization in RFC3455(P-Charging-Vector header).

But by my current understanding, IMS hasn't do any syntax or function 
level standardization for "Reverse Charging". So, my intention here is 
looking for some *defined SIP syntax*  for "Reverse Charging".

Thanks,

Gao

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Paul Kyzivat <pkyzivat@cisco.com> 
2010-09-20 20:35

收件人
gao.yang2@zte.com.cn
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sipcore@ietf.org
主题
Re: [sipcore] Does SIP support "Reverse Charging" function?

Hi Gao,

SIP doesn't have any builtin mechanisms to support charging *at all*, 
either forward or reverse.

Obviously there are systems that are doing charging, but that hasn't 
involved the ietf. I guess IMS has some mechanisms for that, but IIUC 
you are involved with IMS so probably know those better than I.

                 Thanks,
                 Paul

On 9/19/2010 8:55 PM, gao.yang2@zte.com.cn wrote:
>
> Hi,
>
> Background:
> 1. Reverse Charging is defined by ITU in I.256.3;
> 2. 3GPP's 22.173 and 24.173 have mentioned "Reverse Charging", but
> there's no specific definition.
>
>
> Now, we(ZTE)'d like to implement the "Reverse Charging" in SIP network.
>
> Question:
> "Reverse Charging" need some indication extension for SIP usage, I'd
> like to know how people think about this problem.
>
> If this problem has been discussed here, sorry for that.
>
> Thanks,
>
> Gao
>
> ===================================
> Zip : 210012
> Tel : 87211
> Tel2 :(+86)-025-52877211
> e_mail : gao.yang2@zte.com.cn
> ===================================
>
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