• ‘End-to-end’ high-grade encryption for voice communication over VoIP network (fixed-line)
  • Compatible with most of the fixed-line VoIP phones (CISCO CP-78xx & CP-88xx series recommended) and networks (*)
  • Easy to use – “plug-and-play” without any software installation
  • Represents the state-of-the-art combined software and hardware solution
  • Protected against physical or remote attacks
  • Generates ephemeral keys for every voice call
  • Ensures the highest confidentiality – no servers or remote key storing!
  • No backdoor in the system
  • Half-duplex communication

Attention ! At least two devices are required in the system to be functional.

(*) Supported networks/phones with the following voice codecs: G711a/u; G722;G729; G729a; iLBC; G726-24,32,40; Silk (@8kHz with rate >= 10kbps, @16kHz with rate >= 15kbps)


Out of stock


Secure your phone calls on your landlines with a non-decryptable CBOX VoIP solution! Today, because of the multiple risks of “invisible” malware on mobile phones, it is safer to talk on a well-protected landline than on a “mainstream” mobile phone – even apps such as WhatsApp, Telegram, or Silent do not guarantee absolute confidentiality following the latest flaws in Android and iOS systems!

CBOX VoIP is the first solution fully designed for voice over IP (VoIP) calls and secures all fixed VoIP phone calls, regardless of the brand of phone used or the telecom operator. Providing both an advanced adaptive voice communication method and a high level of encryption, BLACKBOXSECU’s CBOX VoIP enables organizations and professionals to protect themselves from illegal eavesdropping and the spying of conversations whose threats are constantly growing. Having the military level of encryption (256-bit symmetric keys), our plug & play solution works with all types of VoIP operator and VoIP telephone terminals, does not use servers in communication (point-to-point communication), does not store any encryption keys, unlike any existing solution on the market today!

You have 100% control over the confidentiality of your conversation!

Demo of CBOX VoIP on live fixed-line network





Additional information

Weight 180 g
Dimensions 10.5 × 4.8 × 1.7 cm
Numer of devices


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