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					PRESS 
					RELEASE 
					
					 PrivaFone 
					Chooses sipX for Development of Secure SIP Products 
					
					 February 
					1, 2006 
					  
					PrivaFone 
					Corporation of Amarillo, 
					Texas has chosen sipX code to begin development work on its 
					line of secure communications products.  These products will 
					include:  
					
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					Secure 
					SIP Softphone using both symmetric and asymmetric encryption 
					with symmetric keys up to 8192 bits (AES).  Symmetric 
					encryption defeats man-in-the-middle (MITM) attacks.  A new 
					symmetric key is used for each call, and keys are securely 
					destroyed after use.  The softphone is designed to work with 
					the Tiger Jet USB/RJ11 adapter, which will allow use of an 
					ordinary telephone as a handset.  Multiple lines will be 
					possible, and if desired they each can be registered with a 
					different SIP server.  Our softphone is based on sipXtapi.  
					
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					Proprietary Keyset Transfer Utility that allows symmetric 
					keysets to be transferred securely over the Internet. 
					
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					PrivaFone 
					PBX Server—lets users easily upload their own SIP proxy 
					server to a website and register their SIP softphones with 
					the server.  This solves the problem of getting through 
					firewalls.  Covert Mode—users have the option of encrypting 
					SIP packets a second time under HTTPS in connection with 
					their proxy server.  Our PBX is based on sipXpbx.  
					
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					SIP 
					service by subscription.  Users may subscribe to PrivaFone 
					SIP proxy service and use our SIP proxy server in lieu of 
					buying and maintaining their own.  
					
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					Support 
					contracts by subscription.  PrivaFone strongly feels that in 
					order to have adequate technical support, customers should 
					be offered a support contract.  
					
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					The 
					source code for our products—although proprietary—will be 
					published.  We feel this is important to establish trust.  
					
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					Product 
					release tentatively is scheduled for June, 2006.  
					PrivaFone 
					acknowledges the inherent right of people to communicate 
					privately and securely.  Our software will give people the 
					ability to exercise this right.  
					Inquiries 
					from the press are cordially invited. 
					
					
					Steve Ashburn, Ph.D.President
 PrivaFone Corporation
 Phone:  
					+1 806-358-9530
 www.privafone.com
 
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