If you read 3262, there is, in fact, a concept of an RSeq that is 
100rel-specific.

-- Alex

> On Dec 30, 2024, at 2:22 pm, Ben Kaufman via sr-users 
> <[email protected]> wrote:
> 
> Benoit,
> 
> You posted "rseq", but do you mean "cseq"? Is the issue you reference 
> Freeswitch returning a 482 reply to a serial forked request?
> 
> 
> Kaufman
> Senior Voice Engineer
> 
> 
> 
> E: [email protected]
> 
> 
> 
> 
>  SIP.US Client Support: 800.566.9810  |  SIPTRUNK Client Support: 
> 800.250.6510  |  Flowroute Client Support: 855.356.9768
>  
> From: Benoît Panizzon via sr-users <[email protected]>
> Sent: Monday, December 30, 2024 10:14 AM
> To: Fred Posner via sr-users <[email protected]>
> Cc: Fred Posner <[email protected]>; Benoît Panizzon <[email protected]>
> Subject: [SR-Users] Re: how to call loose_route() after adding route header 
> without using msg_apply_changes?
>  CAUTION: This email originated from outside the organization. Do not click 
> links or open attachments unless you recognize the sender and know the 
> content is safe.
> 
> 
> Hi Fred
> 
> > I would be remiss if I didn’t mention that FreeSWITCH is a very
> > decent b2bua; especially light-weight if you are already proxying
> > media on rtpengine and “bypass media” in freeswitch.
> >
> > Example:
> > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Ffredposner%2Fcluecon2023&data=05%7C02%7Cbkaufman%40bcmone.com%7C01f5931bd429453d850508dd28eda268%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C638711723322608690%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=xe84ppsPGLmmaudVFPhu6VD6GEgJ4x%2BslMux%2B0zEybA%3D&reserved=0
> 
> I used your example and we tried FreeSWITCH. Thank you for your
> suggestion.
> 
> Unfortunately we ran into massive issues we were not able to solve.
> 
> I don't exactly recall which one it was but it appeared in situations
> involving:
> 
> * 100rel required
> * parallel branches
> 
> It was either the issue that FreeSWITCH itself was dropping rseq
> replies with same rseq number but different totags wrongfully as
> duplicates.
> 
> Or it was the issue with those replies with different totags on the 2nd
> leg being mapped to ONE totag on the first leg causing the original
> sender to consider them a duplicates and dropping them.
> 
> --
> Mit freundlichen Grüssen
> 
> -Benoît Panizzon- @ HomeOffice und normal erreichbar
> --
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-- 
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com
Tel: +1-706-510-6800

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