3 of 3
Item
Code
Modem Data Security
AC431A
2/7/2007
#14584
TECH SPECS
Authorization Programming —
Single connection of two Modem Data
Security units, internal handshakes and automatic proprietary
authorization protocol exchange. One-Way or Two-Way authorization
determines which can initiate session connection.
Authorized Connections —
After modems connect, Modem Data Security
units establish authorized identification based on previously stored table
information. If unauthorized, modems receive hang-up commands.
Session Setup Time —
Less than 1 second
Real Time Encryption Speed —
>1 Mbps
Data Encryption Method —
DES, plus multiple levels of algorithms, record
masking, and cipher-block chaining
Key Generation —
Automatic, based on numerous coefficients and internal
factors unique to each pair. Key generation occurs independently
within each Modem Data Security and is never transmitted. Weak keys
are automatically detected and re-generated.
Active Pins During Modem Session —
1–8, 20, 22, both Active and
Defeat modes
Cable —
24-inch RS-232, two 25-pin (DB25) connectors, one male and one
female; straight-through wiring, shielded
Security Switch, Programming —
Switch Position as of disconnect:
Both Active: Two-Way Authorization;
One Active, one Defeat: Defeat Modem Data Security can initiate a
session to other (Active) Modem Data Security;
Both Defeat: Authorizations between those two Modem Data Security
units are removed
Security Switch, Session —
Active: Unit in full operation;
Defeat: Unit in standby, simple passthrough of all data and RTS/CTS
Modem Control Commands Passed —
All “AT” modem commands are
passed without encryption. Request To Send (RTS) and Clear To Send (CTS)
are passed between DTE (computer) and DCE (modem).
Serial Speed —
300 bps to 38,400 bps, automatic detect
System Throughput Speed —
The benefit, if any, of data compression
performed by modems is reduced when using encryption; Computer-to-
modem serial speeds of 38,400 bps, or even 19,200 bps, should enable
V.32 bis modems to operate at maximum speed (14,400 bps)
Authorized Address Storage Capacity —
Maximum of 500 valid Modem Data
Security IDs
Microprocessor —
16-bit, RISC, on-board ROM and RAM, DUARTs, anti-
tamper firmware
Memory —
Additional SRAM, backed up by lithium battery when external
power is not present
Tamper Resistance —
Auto-zero up firmware, polyurethane potting, total
encryption of all external signals and handshakes
MTBF —
720,000 hours of continuous operation
Connectors —
(1) DB25 male, (1) DB25 female
Indicators —
(3) LEDs: (1) Power, (1) Status, (1) Encryption
Operating Temperature —
32 to 122°F (0 to 50°C)
Power —
Internal: Lithium battery, 5-year, active only when external power
is removed;
External: Transformer, output 9 VDC, 300 mA
Size —
1.8"H x 2.8"W x 4.9"D (4.6 x 7.1 x 12.4 cm)
Weight —
11 oz. (311.8 g)
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blackbox.com
✦
Modem Data Security
✦
1-foot (0.3-m) DB25 male/male serial cable
✦
Power transformer
✦
A user’s manual
WHAT‘S INCLUDED
