full-disclosure - Re: Circuit Switched Data in the US?

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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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>>
>

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