[SIPForum-discussion] Difference between stateless and statefulproxy in SIP protocol

[seshagiri]

Hi Sip implementors


i have a doubt here , wt is difference between dialog stateful and
transaction stateful proxies ?

could u pl the scenarios where v can use these.


Regards
Sesh

On Wed, Sep 29, 2010 at 6:08 AM, Rohan Sarker <rohansarker1 at gmail.com>wrote:

> Hi Ashish,
>
>
>
>
> For Reliance & Tata in India, we implement SIP Trunking for ZTE ZXC10 &
> Huawei MSOFTX3000. I would like to know what type of Proxy is implemented
> for them & why?
>
>
>
>
>
> Regards
> Rohan Sarker
> IBM Pune & IBM Kolkata & IBM Bangalore
> Tel:+919903051236
> =.=.=.=.=.=.=.=.=.=.=.=.=.=.=.=.=.=.
>
>
> On 9/28/10, Ashish Mishra (ashismis) <ashismis at cisco.com> wrote:
>
>>  Ruben,
>>
>>
>>
>> Stateless proxy does not remember anything once a request is forwarded.
>>
>> Stateful proxy remembers the request until the transaction is over.
>>
>>
>>
>> Benefits of stateful proxies are they are feature rich and useful for
>> getting billing info, existing session modification/negotiation etc.
>>
>> B2B UA is transaction stateful proxy.
>>
>>
>>
>> Second part, there is something MAX-FORWARDS in SIP header, which will not
>> allow more than 70 hops as per IETF recommendation.
>>
>> So more than 68 proxies cannot forward request between A to B.
>>
>>
>>
>> Hope that helps.
>>
>>
>>
>> -          Ashish
>>
>>
>>
>> *From:* discussion-bounces at sipforum.org [mailto:
>> discussion-bounces at sipforum.org] *On Behalf Of *Ruben Roque
>> *Sent:* Tuesday, September 28, 2010 9:37 AM
>> *To:* discussion at sipforum.org
>> *Subject:* [SIPForum-discussion] Difference between stateless and
>> statefulproxy in SIP protocol
>>
>>
>>
>>
>>
>> Hi,
>>
>>
>>
>> 1) I want to know an example of a stateless proxy and a stateful proxy. Is
>> B2BUA a stateless or stateful proxy?
>>
>>
>>
>> 2) If a INVITE request is to be sent from user A to user B, but there are
>> 100 stateless proxies in path -- will the request be successfully delivered
>> to user B?
>>
>>
>>
>> Thanks and Regards,
>>
>> Reuben
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> This is the SIP Forum discussion mailing list
>> TO UNSUBSCRIBE, or edit your delivery options, please visit
>> http://sipforum.org/mailman/listinfo/discussion
>> Post to the list at discussion at sipforum.org
>>
>>
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20100929/6cd6bee3/attachment-0002.html>