-Caveat Lector-
From: "Engler, Donna" <[EMAIL PROTECTED]>
To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
Subject: NIJ Standard-0227.00, Digital Intercept System (DIS)
Date: Tue, 12 Jun 2001 15:57:59 -0400
:
New Publication from the
Office of Law Enforcement Standards
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NIJ Standard-0227.00, Digital Intercept System (DIS)
for Integrated Services Digital Networks (ISDN)
*******************************************************
The purpose of NIJ Standard 0227.00 is to establish
functional, performance, interface, and documentation
requirements for the digital intercept systems
developed for use by law enforcement agencies for
interception and evidence gathering on basic rate
access ISDN lines.
The digital intercept system provides the capability to
intercept any voice or digital data traffic between a
subscriber and an associate and forward it to a central
collector station for decoding and processing. The
system is modular, consisting of one or more bridges
(one for each subscriber line to be intercepted), and a
central collector facility. The bridges intercept and
forward all traffic from both directions on the
subscriber's line to the central collector over leased
forwarding facilities. At the central collector, a
workstation for each monitored line provides an agent
with control of the intercept process. Voice is made
available for headphone monitoring and analog tape
recording; minimization capability is provided to limit
data retention to that with evidentiary content.
Digital messages are stored on separate media for later
retrieval and review. Facsimile messages are routed to
a processor port for analysis by an external device.
The standard was developed under the sponsorship of the
National Institute of Justice (NIJ). The project began
when NIST/OLES entered into an interagency agreement
with the Federal Bureau of Investigation to provide
technical guidance for developing ISDN intercept
methodologies. After the technology was successfully
demonstrated the preparation of the performance
standard was undertaken. The standard is now available
on a CD-ROM. The CD has been recorded in Adobe Portable
Document Format (PDF). Reader software for viewing PDF
files is included on the CD for Windows 95/98/NT and
Macintosh Systems.
*******************************************************
Obtain a Copy of the Standard
*******************************************************
The standard bears a FOR OFFICIAL USE ONLY
classification, meaning it may be disclosed only to
members of the law enforcement community and those in
private industries supporting law enforcement
activities. Please submit the request on your company
letterhead. There is no charge for the standard, but
only written requests can be honored.
Send requests for this CD-ROM to:
A. George Lieberman, Ph.D.
National Institute of Standards and Technology
100 Bureau Drive
Stop 8102
Gaithersburg, MD 20899-8102
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