GSMK Gesellschaft für Sichere Mobile Kommunikation mbH • Berlin, Germanyhttp://www.cryptophone.com

TECHNICAL SPECIFICATIONS

Telephone Line InterfaceStandard analog PSTN/POTS interface withRJ11/RJ13 plug, ISDN connectivity available withoptional adaptor

EncryptionStrongest and most secure algorithms availabletoday - AES256 and Twofish, 4096 bit Diffie-Hellman key exchange with SHA256 hashfunction, readout-hash based key authentication,256 bit effective key length encryption, key isdestroyed as soon as the call ends.

GSMK CryptoPhones are the only secure phoneson the market with full source code publishedfor independent security assessments - no`proprietary´ or `secret´ encryption, no backdoors,no key-escrow, no centralized or operator-ownedkey generation, no key registration.

InteroperabilityFully compatible with all GSMK CryptoPhonedevices*

Dimensions & WeightEncryption unit 50 x 275 x 172mm, 2000g,black aluminium, no moving parts or fansTelephone style may vary, customer specific modelavailable for larger orders

External PortsStandard analog audio port (separate 3.5mmjacks for line in/out) for interfacing theCryptoPhone PSTN/1 with audio and video-conferencing equipment, RS232 serial port forconnecting satellite equipment (Thuraya orInmarsat, other networks on request).System runs on 12V DC power (provided by 100-240V AC power supply)

DisplayAlphanumeric LCD display for key hash valueverification and call information

Operational FeaturesLast number redial function, programmablephonebook, speakerphone, ringer, volume control

Trustworthy Voice Encryption

The CryptoPhone PSTN/1 comes with full sourcecode available for independent review. Finally,you can perform an independent assessment toensure that you can rely on strong encryptionwithout any backdoors in the communicationsdevice that you entrust your security to. TheGSMK CryptoPhone PSTN/1 enables you to putthe trust where it belongs – in a trustworthy,open and scientific verification process.

GSMK CryptoPhone technology is based on well-researched algorithms for both encryption andvoice processing. It features the strongestencryption available combined with key lengthsthat provide peace of mind today and in thefuture.

GSMK CryptoPhone PSTN/1Secure PSTN Landline Telephone

GSMK Gesellschaft für Sichere Mobile Kommunikation mbH • Berlin, GermanyTel. +49 700 CRYPTTEL [27 97 88 35] or +49 30 2462-5000

Fax +49 700 CRYPTFAX [27 97 83 29]http://www.cryptophone.com

Your Local Distributor:

Encryption Overview

Diffie - Hellman 4096bit SHA-256

value II 0x02

value II 0x01

value II 0x00

SHA-256

SHA-256

SHA-256

256 bit key

256 bit key

256 bit key AES-256

Twofish

USER

Counter

256 bit

Voice Datafrom Codec

User DataMessages

MUX XOR

XOR

keystream

ENCRYPTED DATA

Standard Accessories100 – 240V AC power adaptor, full cable set, high-quality lockable aluminium transport suitcase

Optional Accessories100 – 240V AC uninterruptible power supply,powerline filtering, 12V cigarette lighter type powersupply, solar power pack

Type ApprovalsDesigned for and in the process of being approvedfor connection to the public switched telephonenetwork in more than 50 countries and regionsworldwide. Please find below the current list of typeapprovals.

Countries and RegionsArgentina France Latvia Russia Australia GermanyLiechtenstein Singapore Austria Greece LithuaniaSlovak Republic Belgium Hong Kong, S.A.R. of ChinaLuxembourg Slovenia Brazil Hungary Malaysia SouthAfrica Canada Iceland Malta Spain Chile India MexicoSweden China Indonesia Netherlands SwitzerlandCyprus Ireland New Zealand Taiwan Czech RepublicIsrael Norway Thailand Denmark Italy Philippines

Turkey Estonia Japan Poland United Kingdom FinlandKorea Portugal United States **

* Secure calls from a CryptoPhone PSTN/1 to CryptoPhone models 100, 200,200T or G10 require incoming analog V.32 data calls to be available on the mobileside. Depending on your GSM subscription/call plan, this service might have tobe added to your subscription/call plan by your mobile network operator.

** This list is the target set of countries or regions in which the GSMK CryptoPhonePSTN/1 will be approved. Many of the approvals have already been completedat the time this product is released to market; others are in the process of beingissued. If you need approval for a country not on the list, please contact us.Usually the approval can be arranged within a reasonable timeframe.