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Message-ID: <ba3b5a380810191809o6ab2b94em2cf9c7f98ba3fb2@mail.gmail.com>
Date: Sun, 19 Oct 2008 20:09:56 -0500
From: "Miller Grey" <vigilantgregorius@...il.com>
To: "Fabio Pietrosanti (naif)" <lists@...osecurity.ch>,
full-disclosure@...ts.grok.org.uk
Subject: Re: Circuit Switched Data in the US?
What kind of tests?
On Wed, Oct 15, 2008 at 3:37 AM, Fabio Pietrosanti (naif)
<lists@...osecurity.ch> wrote:
> Hi,
>
> interested in making some tests and evaluating some possible issue?
>
> Fabio
>
>
> Miller Grey wrote:
>
>> Interesting...
>>
>> On Tue, Oct 14, 2008 at 7:25 AM, Fabio Pietrosanti (naif)
>> <lists@...osecurity.ch> wrote:
>>
>> Hi all,
>>
>> i am evaluating how the CSD (Circuit Switched Data) service is
>> available
>> in the USA to make mobilephone<-->mobilephone data calls.
>>
>> This because encrypted mobile phone calls in order to be done without
>> intermediate registration servers, required CSD calls (point-to-point
>> data path).
>>
>> I am not considering VoIP, i am talking about CSD calls with
>> point-to-point direct data path between phones.
>>
>> Well, AT&T tell that since end of 2005 CSD is available only for
>> "Qualified Government Users" for crypto calls:
>>
>> http://www.wireless.att.com/businesscenter/solutions/connectivity/circuitswitch.jsp
>> A very stupid way of blocking a service used for encrypted phone
>> calls...
>>
>> I verified that foreign operator's SIM card roaming in the USA can
>> receive and make CSD calls. :)
>>
>> However i am interested in users that in the US can get a local phone
>> number from a local operator and then use encrypted phone call system
>> over CSD (being it GSM or CDMA don't care, are compatibile
>> networks for
>> CSD).
>>
>> I heard that alltel and verizonwireless even if don't say anything and
>> their customer support is not able to tell you anything have
>> working CSD
>> support.
>>
>> Does anyone is interested in making some testing of international data
>> calls from europe to the US (i will make the call) to see if CSD
>> service
>> it's active on some mobile operator, other than AT&T ?
>>
>> Or if someone has already experience with USA operator and
>> mobile-to-mobile CSD calls it would be an interesting topic!
>>
>> -naif
>>
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