X.25 is very useful for non TCP applications, especially in places where the infrastructure is less-than-modern.
X.25 used as a layer 2 transport (even though it is not technically a L2 protocol, but then neither is ATM) is useful because it has error checking. -- TTFN, patrick On Nov 2, 2010, at 4:34 PM, Julio Arruda wrote: > There used to be quite substantial usage of X.25 in Brazil, for a lot longer > than usual, for POS transactions. x.28 in fact, that would be PAD to X.25, > may still be the case ? (RENPAC and 3028 come to mind) > > The management of some Nortel GSM devices also could be done over X.25, > usually, it would be backhauled over XOT (or in this case, the Nortel > equivalent) to the management station, from the devices (I'm happy to say, I > don't remember if from the BSCs, or BTSs). > Of course, QLLC and running QLLC to LLC (token ring) devices, was the cherry > on top..SNA on top of X.25, converting to token ring SNA.. > > Somehow, I can't get rid of the nightmares and the waking in the middle of > the night, thinking about LAPB, and Clear codes and etc., LUs and PUs...the > horror...the horror.. > > > > > On Nov 2, 2010, at 3:59 PM, Sven Olaf Kamphuis wrote: > >> doesn't most of SMS (the crap on GSM's) also run on x.25? >> >> i recall some customer of mine talking X.25 to a telco to get their messages >> to the phones anyway. >> >> same for one of our banks not so very long ago... >> >> >> On Tue, 2 Nov 2010, Sven Olaf Kamphuis wrote: >> >>>> Are there still any commercial X.25 nets in operation? I had some >>>> peripheral involvement with Tymnet in the MCI/Concert conversion, and hear >>>> it shut down sometime in 2003-4. >>> >>> http://www.ram.nl/nl/aanbieder_van_mobiele_datacommunicatie/diensten/netwerkdiensten?read_more=1323735124421760482 >>> >>> also: yep. >>> >>> commercial x.25 based packet radio networks, and the wired parts to keep >>> them together, are still around. >>> >>> (the non-commercial ones also ofcourse ;) >>> >>> -- >>> Greetings, >>> >>> Sven Olaf Kamphuis, >>> CB3ROB Ltd. & Co. KG >>> ========================================================================= >>> Address: Koloniestrasse 34 VAT Tax ID: DE267268209 >>> D-13359 Registration: HRA 42834 B >>> BERLIN Phone: +31/(0)87-8747479 >>> Germany GSM: +49/(0)152-26410799 >>> RIPE: CBSK1-RIPE e-Mail: s...@cb3rob.net >>> ========================================================================= >>> <penpen> C3P0, der elektrische Westerwelle >>> http://www.facebook.com/cb3rob >>> ========================================================================= >>> >>> Confidential: Please be advised that the information contained in this >>> email message, including all attached documents or files, is privileged >>> and confidential and is intended only for the use of the individual or >>> individuals addressed. Any other use, dissemination, distribution or >>> copying of this communication is strictly prohibited. >>> >>> >>> On Tue, 2 Nov 2010, Chris Boyd wrote: >>> >>>> On Nov 1, 2010, at 11:48 AM, Nick Hilliard wrote: >>>>> And FDDI and X.25 and every single legacy protocol >>>> Are there still any commercial X.25 nets in operation? I had some >>>> peripheral involvement with Tymnet in the MCI/Concert conversion, and hear >>>> it shut down sometime in 2003-4. >>>> --Chris >>> >> > >
