Brent 2 Secure Telephone Designed by CESG Is Launched

SECURITY FEATURES TECHNICAL FEATURES

• Self-synchronising cryptographic algorithm • ISDN interface to public and private BRENT 2 Secure Telephone developed and approved by CESG networks via basic access standard • Crypto and key management features ETSI I.420 proprietary to HMG • EURO ISDN & BT ISDN2e compliant • Unique encryption variables generated • RED ISDN S0 bus automatically between phones for each • RED data port interface to X.21 at 64 call kbit/s (independent of voice channel) • UK and National User Group STKs • External 115/230V AC mains power supply • STK User Groups of unlimited size can be unit (standard) requested • Erasure of all crypto data on removal of APPROVALS STK • CESG certified for protectively marked • With the STK removed, the unit is not traffic of the highest levels with all caveats protectively marked, but is treated as a • TEMPEST approved to AMSG 720B and valuable item and must be accounted for to BTR/01/202(4) • Call Bypass Monitor • BABT, EMC and safety tested and • Tamper resistant construction approved for use in benign office environments

BRENT 2 is a CESG-designed secure ISDN (Integrated Services Digital Network) telephone which protects voice and data up to TOP 1 SECRET and all UK caveats. It is an upgrade 0 0 to the current BRENT and meets requirements for both secure and non-secure telephony. 0 1 1 Communication 0 Encryption For information on procurement of BRENT 2, please contact: For more information on any aspect of CESG’s work, please contact: 0 Marconi Secure Systems Ltd 2 Wavertree Boulevard Customer Support Office 1 Wavertree Technology Park Communications-Electronics Security Group 1 Liverpool PO Box 144 0 0 L7 9PE Cheltenham. GL52 5UE 1 United Kingdom Manufactured by Tel: +44 (0)151 282 5300 Tel: +44 (0)1242 237323 Fax: +44 (0)151 254 1194 Fax: +44 (0)1242 257520 Total Secure Communications E-mail: [email protected] E-mail: [email protected] Website: www.marconi.com Website: www.cesg.gov.uk © Crown Copyright 2001 OPERATING MODES USER FEATURES

• Secure or non-secure voice (warnings • Fully automatic secure call set-up issued in non-secure mode) • Automatic switching to non-secure voice • Secure dial through mode when communicating with non • Secure data BRENT equipment or BRENTs without • Secure voice and data an STK inserted • No loss of speech quality in secure mode USER INTERFACE • Secondary DTMF dialling capability • Recall function • 2 row by 40 character back-lit LC • On-hook dialling display for • Fast dialling (stored numbers) BRENT 2 - remote party authentication - user prompt messages - call status messages BRENT 2 has been designed to operate BRENT 2 can be used wherever there is • dial keypad: standard 0-9 * # over EURO ISDN (CCITT I.420) and access to EURO ISDN I.420 compatible connects directly to the public ISDN, or exchanges or to the UK public ISDN2e • 18 memory keys • 12 function keys 01 to Private Branch Exchanges (PBXs) service. 01101 1001 with I.420 connection. It offers the 01 11 0 following features: BRENT 2 offers all the features of the 01 0 1 original BRENT. In addition, it 1 • Dial-through operation using the new 1 1 0 incorporates a RED S0 bus providing 1 0 1 RED ISDN S0 bus using both 64 kbit/s 10 1 transparent connection to the EURO 0 00 channels independently ISDN. This allows independent dial 1 • ETSI EURO ISDN (BT ISDN2e) BRI through operation for each of the two 0 compliant ISDN channels. The RED S bus can 1 • DTMF signalling 0 0 thus be used to provide transparent • Trusted Authentication Mechanism for 1 automatic checking of caller's certificate secure dial-up connectivity between LANs. 1

1 BRENT 2 has beeen submitted to SECAN Commercial EURO ISDN S0 interface for the NATO BRI competition. compatible equipment plus applications 0 such as ISDN video conferencing and PCs 0 BRENT 2's user-friendly operation allows may be connected directly to 0 secure calls to be established automatically BRENT 2. 1 when a Secure Telephone Key (STK) is 1 inserted in each telephone. The unique Operation of BRENT 2 in UK or approved 0 user STK provides secure call countries is enabled using a UK or 1 authentication and ensures low key National User Group STK. management overhead. 0 1 0 011 1 1010 0 1011 111 101010111010101001 OPERATING MODES USER FEATURES