Secure encrypted mobile communications with VoIP and ISDN based landline phones

Illegal wiretapping poses ever larger risks when it comes to the confidentiality of voice communication, especially since the technical effort involved has become even less complex with the advent of voice over IP (VoIP) and mobile networks. IMSI-catchers are now on the market. These telephony eavesdropping devices essentially act as a fake tower between the mobile phone and the real service provider’s tower and are therefore considered a man-in-the-middle attack. Other attackers focus directly on the internal network of a mobile provider to catch many more calls as they pass the respective switches. This danger becomes very real when road warriors travel in less secure or less trustworthy areas around the world.

Up to now, the market predominantly offered isolated standalone products for voice encryption in a single network that required identical, specialized end-user devices. This has constrained widespread, easy use of such technology. In contrast, the Sirrix.CryptoGateway combines secure mobile communications with existing landline devices based onVoIP or ISDN technology. The CryptoGateway connects encrypted calls between secure mobile phones and any standard phone acting as an extension of an organization’s private exchange. This ensures that outsiders are always faced with fully encrypted voice calls while at the same time ensuring that any extension within the organization can be used to communicate with secure mobile phones. This effectively prevents unsecure connections via the mobile or public fixed telephone network.