From 82de9b73d22046051614e05bb2deea490401eafe Mon Sep 17 00:00:00 2001 From: Petter Reinholdtsen Date: Fri, 1 May 2015 19:22:30 +0200 Subject: [PATCH] More info. --- blog/data/2015-05-01-telefonsamtalelagring.txt | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/blog/data/2015-05-01-telefonsamtalelagring.txt b/blog/data/2015-05-01-telefonsamtalelagring.txt index 44fcdc231f..10b3d758d1 100644 --- a/blog/data/2015-05-01-telefonsamtalelagring.txt +++ b/blog/data/2015-05-01-telefonsamtalelagring.txt @@ -1,6 +1,6 @@ Title: What would it cost to store all phone calls in Norway? Tags: english, personvern, surveillance -Date: 2015-05-01 18:50 +Date: 2015-05-01 19:30

Many years ago, a friend of mine calculated how much it would cost to store the sound of all phone calls in Norway, and came up with the @@ -15,15 +15,17 @@ and the cost of data storage.

the 2012 numbers are from a NKOM report, and I got the 2013 numbers after asking NKOM via -email.

+email. I was told the numbers for 2014 will be presented May 20th, +and decided not to wait for those, as I doubt they will be very +different from the numbers from 2013.

The amount of data storage per minute sound depend on the wanted quality, and for phone calls it is generally believed that 8 Kbit/s is -enough. Se for example a +enough. See for example a summary -from Cisco for some alternatives. 8 Kbit/s is 60 Kbytes/min, and -this can be multiplied with the number of call minutes to get the -storage requirements.

+on voice quality from Cisco for some alternatives. 8 Kbit/s is 60 +Kbytes/min, and this can be multiplied with the number of call minutes +to get the storage requirements.

Storage prices varies a lot, depending on speed, backup strategies, availability requirements etc. But a simple way to calculate can be -- 2.50.1