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Anti Interception VOIP Telephone

Trustworthy Voice Encryption

The Anti Interception VOIP telephone comes with full source code available for independent review. Finally, you can perform an independent assessment to ensure that you can rely on strong encryption without any backdoors in the communications device that you entrust your security to.

The GSMK CryptoPhone PSTN/1 enables you to put the trust where it belongs - in a trustworthy, open and scientific verification process. The Anti Interception VOIP telephone technology is based on well researched algorithms for both encryption and voice processing. It features the strongest encryption available combined with key lengths that provide peace of mind today and in the future.

ip secure telephone

Cod.: Secure IP


Telephone Line Interface
Standard analog PSTN/POTS interface with RJ11/RJ13 plug, ISDN connectivity available with optional adaptor

Strongest and most secure algorithms available today - AES256 and Twofish, 4096 bit Diffie-Hellman key exchange with SHA256 hash function, readout-hash based key authentication, 256 bit effective key length encryption, key is destroyed as soon as the call ends.
GSMK CryptoPhones are the only secure phones on the market with full source code published for independent security assessments - no `proprietary´ or `secret´ encryption, no backdoors, no key-escrow, no centralized or operator-owned key generation, no key registration.

Fully compatible with all GSMK CryptoPhone devices*

Dimensions & Weight
Encryption unit 50 x 275 x 172mm, 2000g, black aluminium, no moving parts or fans telephone style may vary, customer specific model available for larger orders

External Ports
Standard analog audio port (separate 3.5mm jacks for line in/out) for interfacing the CryptoPhone PSTN/1 with audio and videoconferencing equipment, RS232 serial port for connecting satellite equipment (Thuraya or Inmarsat, other networks on request). System runs on 12V DC power (provided by 100-240V AC power supply)

Alphanumeric LCD display for key hash value verification and call information

Operational Features
Last number redial function, programmable phonebook, speakerphone, ringer, volume control

Standard Accessories
100 - 240V AC power adaptor, full cable set, highquality lockable aluminium transport suitcase

Optional Accessories
100 - 240V AC uninterruptible power supply, powerline filtering, 12V cigarette lighter type power supply, solar power pack

Type Approvals
Designed for and in the process of being approved for connection to the public switched telephone network in more than 50 countries and regions worldwide. Please find below the current list of type approvals.


Order or Ask Informations about this product:


I read and authorise the processing of my personal data. *

Disclaimer: The customer is responsible for the knowledge of the laws that rule the use of these devices in his country.

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