So do I. People interpreting call flows as definitive have caused us
lots of grief in the past.

John 

> -----Original Message-----
> From: DOLLY, MARTIN C, ATTLABS [mailto:[EMAIL PROTECTED] 
> Sent: 09 November 2007 17:07
> To: Brian Stucker; Peter Saint-Andre
> Cc: sip; [EMAIL PROTECTED]
> Subject: [RAI] RE: [Sip] RAI-ART Review Comments 
> fordraft-ietf-sip-hitchhikers-guide
> 
> Brian,
> 
> I agree.
> 
> Martin 
> 
> -----Original Message-----
> From: Brian Stucker [mailto:[EMAIL PROTECTED] 
> Sent: Friday, November 09, 2007 11:50 AM
> To: DOLLY, MARTIN C, ATTLABS; Peter Saint-Andre
> Cc: sip; [EMAIL PROTECTED]
> Subject: RE: [Sip] RAI-ART Review Comments for
> draft-ietf-sip-hitchhikers-guide
> 
> Callflows: they're such a double-edged sword.
> 
> They do a good job of quickly explaining something, but can't 
> cover off
> all the vagaries of the spec. They do such a good job, in fact, that
> it's not uncommon for implementors to simply implement the
> easy-to-understand call flow thinking they've captured all of the
> important bits of the underlying specifications; that they never
> properly check to see that they've, in fact, actually implemented the
> spec correctly at all.
> 
> If we're going to include those, then there needs to be a considerable
> amount of warning text exhorting the reader to use the callflows as a
> study aid for the specifications and not as a substitute.
> 
> Regards,
> Brian
> 
> 
> > -----Original Message-----
> > From: DOLLY, MARTIN C, ATTLABS [mailto:[EMAIL PROTECTED] 
> > Sent: Thursday, November 08, 2007 8:48 PM
> > To: Peter Saint-Andre; Stucker, Brian (RICH1:AR00)
> > Cc: sip; [EMAIL PROTECTED]
> > Subject: RE: [Sip] RAI-ART Review Comments for 
> > draft-ietf-sip-hitchhikers-guide
> > 
> > Do you believe that the call/session flows are normative or 
> > informative?
> > 
> > 
> > RFC 3665 call/session flows are very good illustrative 
> > examples, but do not really depict real deployments (measured 
> > in number of calls). 
> > 
> > And further, RFC 3666 does not interoperate with the PSTN, 
> > thereby not a good example.
> > 
> > Cheers,
> > 
> > Martin
> > 
> > 
> > 
> > -----Original Message-----
> > From: Peter Saint-Andre [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, November 08, 2007 7:19 PM
> > To: Brian Stucker
> > Cc: sip; [EMAIL PROTECTED]
> > Subject: Re: [Sip] RAI-ART Review Comments for 
> > draft-ietf-sip-hitchhikers-guide
> > 
> > Brian Stucker wrote:
> > 
> > <snip/>
> > 
> > Sorry to hijack this thread, but I'd like to second a comment 
> > that Mary Barnes made during the WGLC:
> > 
> > http://www1.ietf.org/mail-archive/web/sip/current/msg20981.html
> > 
> > ***
> > 
> > It seems that all the call flow BCPs are missing and I do 
> > think those are really important and should be included in 
> > this document.  The only BCP (type (B) document) listed in 
> > this document is 3PCC.  The basic call flow document (RFC 
> > 3665) should be listed in section 3 (Core SIP).  The PSTN 
> > call flows (RFC 3666, BCP 76) should be in PSTN Interworking 
> > section 4. The SIPPING NAT scenarios document should be in 
> > the NAT section 6.  These docs are all icing on the cake IMHO 
> > and help to guide implementers in using all the other docs.
> > 
> > ***
> > 
> > I agree that the call flow documents are very useful and that 
> > a reference to them would be a good thing.
> > 
> > Peter
> > 
> 
> _______________________________________________
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> 


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