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COMMERCE BUSINESS DAILY ISSUE OF MAY 10,1996 PSA#1592AFFTC/PKAA Directorate of Contracting, 5 S Wolfe Ave, Edwards AFB CA
93524-1185 58 -- DIGITAL SWITCH MAINTENANCE SOL F04611-96-R-0052 POC Leanne
Collins, Contract Negotiator, (805) 277-3900 Ext 2296. The Air Force
Flight Test Center (AFFTC) intends to negotiate a sole source contract
with Communication Systems Technology, Inc. (CSTI), 8975 Guliford
Road, Suite 100, Columbia, MD, 21046-1409, unless responses to this
synopsis reveal other sources capable of satisfying the governments'
requirement. CSTI is the only known source capable of satisfying the
agency requirement. The government requires the following services:
Hardware and software maintenance, hardware and software enhancements,
and system maintenance support. The EDS provides all mission critical
Voice and Time Space Position Information (TSPI) communications
switching capability at the Ridley Mission Control Center (RMCC) at
Edwards AFFTC. Similar systems are located at Eglin AFB, FL. and NAWC
China Lake. The government requires support in the enhancement and
maintenance of EDS components including: Model CS-2800 Subscriber
Terminal Units, Model 2810 STU Channel Expanders, Programmable Line
Interface Units (PLIUs), Four-wire cards, two-wire cards, cipher text
cards, serial line interface cards, STU Controller Units (SCU), Digital
Signal Converters (DSC), Remote Radio Control Unit (RRCU) Network
Controller Software, and Workstation Software. All of the above items
were developed by Communication Systems Technology Inc. (CSTI). Support
will include telephone and on-site support as needed, system and
component troubleshooting and repair, system enhancement, and
replacement unit support for all three switch sites. The Edwards System
utilizes 16 AT&T DACS IIs. The Central Switching Subsystem is the
center of a star configuration using a DACS 320, capable of being
expanded with line cards to supporting up to 320 T1s of communication.
Each of the Control Room Switching Subsystems (CRSSs) contains two
DACS 160s, one RED and one BLACK. Each DACS is capable of being
expanded to 160 T1s of communication. Each switching subsystem has a
minimum of 60 db of channel isolation and 107 db of isolation between
Red and Black channels. The end device is a Subscriber Terminal Unit
(STU). Each STU can be a RED/BLACK device or an all BLACK device. Each
user position can support from 18 to 72 channels, in multiples of 18.
The STUs far exceed the isolation figures given for the switch
subsystems. Each STU has 18 channels each with downloadable mnemonics.
In addition, one ''Indirect Access'' channel is provided for
STU-to-STU dial up capability. Currently Edwards has 340 STUs and 60
STU Channel Expanders (SCEs). Edwards also has 75 Programmable Line
Interface Units (PLIUs) which are programmable channel banks developed
by CSTI. The channel banks are populated with four different line
cards as follows: Four Wire with E&M signaling, Two Wire FXS cards,
cipher text cards, and Serial Line Interface (SLI) Cards. These cards
are extremely flexible and each supports different types of
communications. The cipher text cards switch the 16 kilobit diphase
input and output from KY-58s to their associated radios, eliminating
the need for dedicated encryption units. The SLI cards switch RS-232
data from 2400 bps to 64 kbps. The SLI cards are configurable RS-232
interfaces and support several different loopback testing modes. These
cards are used for switching all of the range TSPI. The EDS contains
a Digital Signal Converter (DSC) which allows the EDS to interface
external signals. Each DSC is capable of interfacing 144 channels to
standard four-wire E&M or two-wire FXO circuits. Since the EDS uses
extensive Digital Multiport Bridges (DMBs), the robbed bit signaling in
a T1 cannot be used. Therefore, a tone based signaling scheme is used
for all signaling internal to EDS. The DSC allows the tone based
signaling to be converted to robbed bit signaling. All assets in the
EDS are controlled using redundant Pentium Network Controllers
(NETCONs) with shared/mirrored disks. The NETCONs use Informix as its
database management tool and are responsible for all connection routing
assignments and tracking. A specialized application was developed by
CSTI to perform all connection logic, issue connections to all DACSs
and end equipment, and configure all end equipment with the operator
selectable parameters. The EDS contains 6 workstations with a
specialized Graphical User Interface (GUI) which allows the system
operators to manage approximately 13,000 separate interfaces. The
system operator is able to connect all resources in 7 different modes
and customize device parameters based on mission need. Interested
parties shall show experience in the following areas of software
development and maintenance: (1) SCO Unix operating systems running
large applications ()500,000 lines of code), (2) the Informix database
product, (3) large network and communications switching system
management, (4) AT&T DACS II running either Generic 2.0 or 6.0 using
Man-Machine Language MML), (5) integration and maintenance of
shared/mirrored disks, (6) local area networks, (7) programming in
Visual Basic and C/C++, and (8) Graphical User Interface (GUI)
development. Interested parties shall show experience in the following
areas of hardware development, maintenance, and production: (1)
combined secure/unsecure (RED/BLACK isolation ) 140 db) communications
devices such as the Subscriber Terminal Unit, (2) RRCUs and
interfacing to the GRC-171 and GRC-211 radio sets, (3) embedded
firmware multi-microprocessor controlled units, (4) programmable logic
devices, (5) multi-layer circuit boards, and (6) D4 channel banks.
Interested parties shall show experience developing, maintaining, and
trouble shooting the following communications types/interfaces: T1,
Ethernet LAN, ISDN protocols, RS-232 interface development, North
American telephone signaling, encrypted data (specifically the
TSEC/KY-58 encryption unit) management, and four-wire with E&M
signaling interface. Questions regarding this synopsis should be
submitted to: Directorate of Contracting, ATTN: AFFTC/PKAA (Leanne
Collins), 5 South Wolfe Avenue, Bldg. 2800, Edwards AFB, CA.
93524-1185. This requirement was previously synopsized as a sources
sought synopsis on 12 FEB 96. Written or telephone requests for the
solicitation will not be honored. See Numbered Note(s): 22. (0129) Loren Data Corp. http://www.ld.com (SYN# 0352 19960509\58-0001.SOL)
58 - Communication, Detection and Coherent Radiation Equipment Index Page
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