Welcome to the Jungerl!

Michael Fogeborg <>
Wed Feb 26 10:10:14 CET 2003


This (patches are not really tested) just seems to happen more and more often
(even in telecom) nowadays. Does anyone have a theory on why ?


At 08:14 26.02.2003 +0000, you wrote:
>A guy who used to work designing the Ericsson SSF blocks works with us now.
>He told us that sometimes patches are not really tested, if they are "simple
>enough" :-) A desk check is done and off it goes to be tried on a live
>network... I'm not saying that's what happened here but that tendency which
>is so prevalent in the datacomms world is also prevalent in the telcoms
>world - but thankfully on a much much smaller scale.
>-----Original Message-----
>From: Miguel Barreiro Paz [mailto:]
>Sent: 25 February 2003 18:55
>To: Sean Hinde
>Cc: 
>Subject: RE: Welcome to the Jungerl!
>
>
>
>(...)
> > Well so do I, sorta, as well, and this is where my personality starts to
> > split apart.. My natural instinct is towards the chaos model, but the
> > manager in me knows what a thin line we tread when we deploy these 2 week
> > creations into our GSM network that millions of customers rely on.
> >
> > All that it would take is one major service outage at the wrong time for
> > folks to start asking difficult questions (and we do seem to be generating
>a
> > few places who would be happy to see us shut down along the way).
>
>After the Airtel Vodafone outage last thursday[1], we have to be a bit
>careful here talking about Erlang as "heavy-duty, used by Ericsson to
>build switching control systems..." and the like, or risk angry sarcasm.
>Even if it was not Ericsson's fault at all (which I don't know) and Erlang
>was not used in the system at all (which I don't know, either).
>
>[1] A software problem during a software upgrade in an Ericsson switch at
>the Vodafone backbone took down the entire Vodafone network in Spain (8.7
>million customers). No more details are publicly known.
>
>
>
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