Full Disclosure mailing list archives
Circuit Switched Data in the US?
From: "Fabio Pietrosanti (naif)" <lists () infosecurity ch>
Date: Tue, 14 Oct 2008 14:25:39 +0200
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 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Circuit Switched Data in the US? Fabio Pietrosanti (naif) (Oct 14)
- Re: Circuit Switched Data in the US? Miller Grey (Oct 14)
- Message not available
- Re: Circuit Switched Data in the US? Miller Grey (Oct 19)
- Message not available
- Re: Circuit Switched Data in the US? Miller Grey (Oct 14)