[TheList] KorKor Tetra Digital/ Tel.Clr. ringback

Fri Jan 13 10:27:53 AEDT 2012

Hi John,

I know TelstraClear 'read-back' number is "511" as for ring test.

Hope this helps

Cheers
Luke

-----Original Message-----
From: thelist-bounces at radiowiki.org.nz
[mailto:thelist-bounces at radiowiki.org.nz] On Behalf Of Daniel Richards
Sent: Friday, 13 January 2012 11:24 a.m.
To: thelist at radiowiki.org.nz
Subject: Re: [TheList] KorKor Tetra Digital/ Tel.Clr. ringback

http://webcache.googleusercontent.com/search?q=cache:QqBFNPV3o40J:citeseerx.
ist.psu.edu/viewdoc/download;jsessionid%3DE71B6F1AE10577B2DFD416A8AFD37D59?d
oi%3D10.1.1.117.7692%26rep%3Drep1%26type%3Dpdf+&hl=en

AFAICT the ciphers are closed proprietary ones (which means they're
probably weak/crap) but I haven't seen any papers announcing crypto
breaks on them.

So no, there's no "software" you can use to crack the crypto on Tetra
systems at the moment, even with a discriminator tap/SDR.

(Feel free to correct me if you turn something up something more than
what my quick google search did)

On Fri, Jan 13, 2012 at 11:15 AM, John Barnhill <barny1 at clear.net.nz> wrote:
> Has anyone any info. on the 'KorKor' Tetra Digital system as far as
> decryption goes- discriminator tap to some sort of software program
perhaps?
>
> Also does anyone have the 'TelstraClear' numbers for 'ringer test' and
> 'read-back' number of the line you are calling from, similar to the
Telecom
> (137) & '1956/1957' numbers, and if so are they the same for all NI/SI
> Telstra Clear areas of service?
>
> Thanks,
>
> John Barnhill
>
>
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