Can you explain with some words diff of B2BUA and call statefull proxy ?

Ok i understand B2BUA, but call statefull then ?

I'm trying to get best way to implement dialog statefull proxy.


Paul Kyzivat wrote:
>
>
> Ivar Lumi wrote:
>> Hi,
>>
>> I'm developing free open source c# SIP stack, all almost well, but 
>> now need some help.
>> (I try to make dialog statefull proxy)
>>
>> Is it right if i say:
>> Dialog statefull proxy won't add record-route header field, but 
>> adds/updates Contact: field in proxy to point to proxy server.
>
> If you do this, you have built a B2BUA, not a call stateful proxy. 
> They are quite different things, though they can be used for some of 
> the same things.
>
>> I did some drawing(not finished yet) but shows what i mean:
>> http://www.lumisoft.ee/ivx/sip/sip_invite.gif
>>
>> Any help will be welcome.
>>
>>
>>
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>>

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