NSK 200 GSM Secure Telephone, NSK 201 DECT Single Base Station and NSK 250 Secure Management Centre (NDLO/CIS)

NSK 200 GSM Secure Telephone,NSK 201 DECT Single Base Station andNSK 250 Secure Management Centre

(NDLO/CIS)

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Features of the NSK 200

Conversations up to NATO SECRET

GSM-GSM GSM-DECT

DECT-DECT

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GSM Transmission channels

Encrypted data channel• Voice transmission• Data transmission• Is used towards NSK 200

Plaintext speech channel• As ordinary GSM/DECT• Used between all other phones• SMS can only be sent as plaintext

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GSM/DECT Data transmission

Encrypted File-transferNATO SECRET

IrDA

IrDA

GSM/PSTN9,6 kb/s

DECT/PSTN28,8 kb/s

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NSK 200 - Technical details

Dimensions: 56 x 140 x 30 mmWeight: 235 gGSM phase 2: Dual band 900/1800 MHzBattery capacity: 810-880mAhStand-by-time: Approx. 70 hoursOperation time: Approx. 3 hoursData Interface: Infrared, IrDAData Speed: GSM: 9,6 kbit/s

DECT: up to 28,8 kbit/sSecurity: NATO UNCLASSIFIED

NATO RESTRICEDNATO CONFIDENTIALNATO SECRET

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NSK 200 Overview

Smart Card Interface

Battery Charger

Hands-free Contact

IrDA InterfaceMenu-wheel

Quick-menu

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Accessories

• NSK 200 bracket for car• Car charger

• Hands-free combined w/external antenna

•DECT Base station w/connection to PSTN, analogue line

•Tabletop charger•Portable charger 220V

10

Features of the NSK 200

• Encrypted speech is transmitted using the GSM asynchronous transparent data service

• The GSM net performs interleaving of data packets, which results in a minor delay when using encrypted speech

• Encrypted speech and data• Plaintext speech and data• Plaintext SMS• Encrypted SMS is not supported

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Digital Enhanced Cordless Telecommunications (DECT) SUB

PowerPSTN (Analogue line)

Registration button

Green LED (power)

Red LED (call/registration)

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Digital Enhanced Cordless Telecommunications (DECT) SUB

Public network

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Features of the DECT SUB

• The DECT SUB, NSK 201, is mainly used in areas without GSM coverage, connected to the PSTN by an analogue line

• The NSK 200 must be registered in the DECT SUB before making calls

• This is done by activating registration menu in the NSK 200 and pressing the Registration button on the SUB

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• Encrypted speech and data• Plaintext speech and data• NSK 200 supports 28,8 kbps for

data calls in DECT mode.

Features of the DECT SUB

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Security Management Centre (SMC)

SMCOSP SMC

(Other Service Provider)

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Features of the SMC

• The main purpose of the SMC is to distribute traffic keys to the SPs (Secure Phones) in the system.

• The SMC is configured as a dual SMC.• The SMC includes a database

comprising all customer information.• SMC can be connected in a network

to other OSP (Other Service Provider) SMCs.

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Key Management

Traffic KeyCan be fetched from everywhere

Group KeyHas to be loaded by Crypto CustodianOnly valid for a minor group

NSK 200 can be loaded with both Traffic Keyand Group Keys

Traffic KeyCan be fetched from everywhere

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Security Requirements

1. General information of the NSK 200 and security classification.

2. Physical Security of NSK 2003. Be aware threat of acoustic eavesdropping4. Use of infrared transmission5. How the Access Card is functioning6. How to clear key memory in NSK 2007. Emergency destruction of the NSK 2008. Breach of Security. Two SDIPs (User and System) under publication

The user of NSK 200 shall be familiar with National Security Requirements:

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How to use NSK 200

1. Switch on the phone

Insert CIK

Ok Skip

Please wait,communicating

with SC…

2. Insert CIK and press ”OK” You can nowremove CIK

Ok

3. Remove CIK (insert the PIN code)

EnterPIN1

Ok Skip****

4. Ready for use in encrypt. mode

Encr. mode110601 01:33

N Telenor

Last No. Ph.book

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How to make encrypted call ?

NSK 200 in Encrypted Mode:

Three ways to make a call: 1. Dial the number

directly 2. Quick code buttons3. Via Phone Book

Via Phone Book, select person:

Select number, press ”Call”:

A voice is announcing security level of the call twice, thanthe connection is established:

Encr. mode050401 01:33N TELENOR

Last No Ph.book

Encrypted speechClient NameConnecting

End

NATO RESTRICTED1:47

Client NameChoice End

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How to make plaintext call ?

NSK 200 in Plaintext Mode:

Select ”Make plain call” in the menu

The connection is established:

Dial number and press ”Call”

Encrypion mode050401 01:33N TELENOR

Latest Ph.book

Make plain call

Ok Cancel

Plaintext mode

Call Delete

Three ways to make a call: 1. Dial the number

directly 2. Quick code buttons3. Via Phone Book

23092940

Plain speech23092940

ConnectingChoice End

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How to make encrypted DECT call ?

NSK 200 in Encrypted Mode:

Three ways to make a call: 1. Dial the number

directly 2. Quick code buttons3. Via Phone Book

Via Phone Book, select person:

Select number, press ”Call”:

A voice is announcing security level of the call twice, thanthe connection is established:

Encr. mode050401 01:33N TELENOR

Last No Ph.book

Encrypted speechClient Name

Connecting DECT End

NATO RESTRICTED1:47

Client NameChoice End

Select DECT on the Quick Menu”R”-buttton

Encr. mode050401 01:33DECT Name

Last No Ph.book