Welcome to the Jungerl!

Chandrashekhar Mullaparthi <>
Wed Feb 26 09:14:45 CET 2003


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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