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
>
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