Integrated Voice and Fax Security
The CSD 3324 SP secures voice and fax communications in a single telephone package. The CSD 3324 SP has a fallback mode that was originally developed for poor HF channels. As a result, secure communications are possible even over degraded line conditions. Its 9,600 bps MPLP vocoder provides excellent recovered voice quality with automatic fallback to 4,800 bps CELP as needed.
A universal, 2-wire RJ-11 fax interface is provided on the phone enabling fax encryption regardless of the chosen brand of Group 3 fax used. The fax capability is auto-answering and auto-sensing, allowing incoming calls to be screened by the telephone. If the call is not a fax call, the telephone "rings" giving the user a second chance to answer any incoming voice calls.
Incoming and outgoing plain (non-secure) and secure fax communications, or secure-only fax mode are supported. Secure fax and voice communication modes may be password restricted. Without the password, the CSD 3324 SP functions in only non-secure mode. User-friendly menus, which may be password protected, provide logical set-up of the CSD 3324 SP's voice answering and fax handling options.
The CSD 3324 SP protects voice and fax calls using Advanced Encryption Standard (AES) encryption engines seeded using Diffie-Hellman public key auto-negotiated 256-bit session keys, and path-independent initialization vectors.
Public Key management: Diffie-Hellman (D-H) Public Key negotiated session keys and Initialization Vectors (IVs); 1,024-bit D-H modulus; six authentication characters used to prevent 'man-in-the-middle' attacks.
Key generator: AES 256-bit session keys; dual AES key generators, full-duplex and path-unique IVs
Secure Voice and Fax Encryption Specifications
50 names and phone numbers
last number redial feature
user configurable number of rings
2 lines × 16 characters LCD display
20 push-button keypad
- 12 button standard telephone keypad
- 8 function key buttons
secure mode password
menu access password protection
100-240 V AC, 50/60 Hz, 9.5 W (nom)
auxiliary DC power, primary or as backup to AC, 10-30 V DC 7 W (nom)
Height: 10.3 cm
Width: 31.3 cm
Depth: 27.2 cm
Weight: 2.32 kg unpacked
Telephone line interface - two-wire, RJ-11 phone line I/O
Fax interface: Two-wire, RJ-11 facsimile I/O, Group 3 (9.6, 7.2, 4.5, 2.4 Kbps)
- Four-wire handset analog signal port (modular RJ-8)
- Voice digitization (vocoders): 9.6Kbps MPLP, 4.8Kbps CELP (fallback)
CSD 3324 SPV voice-only model
CSD 3324 SP and SPV available in Beige or Black