On Wed, Feb 10, 2016 at 8:20 AM, Alex Balashov <abalas...@evaristesys.com> wrote:
> Seems one can't win. There's got to be a reason this option came about. > However, it's been around for a long time, and may date back to the mid > 2000s... > > Any empirical knowledge of whether there remain UAs out there nowadays > that don't properly support bareword 'lr'? > Well, your guessed the reason already. At some point there was some piece of equipment or software out there that could not handle it, so that somebody got sufficiently annoyed and added an option. The question I think is not "is there are any", but "how many". Even that has no real answer, I see no reason why somebody in 50 years cannot dust off his old-good ATA-186 and try to get it running. ATA-186 here is just for an illustration, I have no reason to believe that specific piece of gear could not handle that parameter correctly. But yes, in the early SIP days people got to cope with all sorts of weird compatibility issues between independent early implementations and sometimes adding an option like this would be the only feasible way to unblock yourself and move on to some more interesting problem than trying to get vendor X to fix their implementation. Been involved myself with trying one big company starting with capital c fix few stupid SIP protocol violations in their IOS product I can attest that it is not the something I would be willing to spend my time on in the future. -- Maksym Sobolyev Sippy Software, Inc. Internet Telephony (VoIP) Experts Tel (Canada): +1-778-783-0474 Tel (Toll-Free): +1-855-747-7779 Fax: +1-866-857-6942 Web: http://www.sippysoft.com MSN: sa...@sippysoft.com Skype: SippySoft _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
