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70 -- COMPATIBLE DS0A LINE DRIVER MODEMS POC Mr. Andrias Woody, 703-607-4607, Contract Specialist, Facsimile 703- 607-4611, Boyd E. Blevins, Contracting Officer. Sources Sought. The Defense Information Systems Agency is seeking sources capable of providing a maximum of five hundred (500) Digital Data Service (DDS) compatible Channel Service Unit/Data Service Unit (CSU/DSU) DS0A Line Drive Modems to perform asset standardization. The initial purchase will be fifty-five (55) units. The potential period of performance for this effort will be a base year with four (4) option years. Specifications: (1) Common equipment requirements: (a) Network manageable: All units must be network manageable from a single network management station without patching or manual switching. All units configuration and monitoring will be accomplished external to the user data channel. Remote units will be configurable and provide monitoring via the facility data link when using ESF, or in the channel overhead when in the line drive mode, (b) Software remotely controlled via front panel: In a stand alone point to point link, both near and far end units will be controllable from near end front panel, and/or attached control device, (c) Diagnostics via loop backs: All functions will be accessible via remote interface. Equipment will perform link quality monitoring, (d) Unit packaging/mounting requirements: Two versions of the unit will be made available. One unit shall be a ruggedized, portable, compact version and the other version shall be a 19 inch rack mountable design. Both units will have the same front panel menus and remote interface, (e) Channel interfaces shall be RS-232D/V.24, RS-422/V.11, RS-53/V.11, V.35 and DS-1, (f) Selectable transmit clock source: Equipment will be selectable between network and DTE timing, DTE clock will be selected between TT and ST, (g) the modems must be usable with bulk encryption devices and switchable between Line Driver function and CSU/DSU function. (2) CSU/DSU Requirements: (a) One's density control: Equipment will conform with commerical network specification for one's density control. Greater than 15 consecutive zeros, less than 12.5% one's. (e.g. (15 consecutive zeros, )12.5% 1's), (b) Framing: D4 or ESF. Equipment will accomplish transcoding. When used as CSU, the equipment and line interfaces will be independently selectable between D4 and ESF, (c) Coding: B8ZS or AMI. Equipment will accomplish transcoding. When used as CSU, the equipment and line interfaces will be independently selectable between AMI and B8ZS, (d) The equipment must be fractional T-1 capable with standard data rates (n x 56 and n x 64). Equipment will accept data rates below 64kbs by using standard DS0B subrate multiplexing, (e) equipment output will be adjustable via LBO of 0, 7.5 and 15db. (3) Line Driver Requirements: (a) Equipment must provide user data channel speeds up to 1.544Mbs, (b) Equipment must support transmission distances of up to 5.5km, over unconditioned 24 AWG twisted pair wire, (c) Equipment must provide single or dual channel multiplexing. Dual channel is preferred. This synopsis is for information and planning purposes only, does not constitute a solicitation, and shall not be construed as a committment by the Government. Two copies of descriptive literature must be received not later than thirty (30) days from publication of this synopsis. This is not a Request for Proposals, do not send technical or cost proposals. Please address the above stated requirements in the descriptive literature and provide to DISA per the address in this synopsis. (0026)

Loren Data Corp. http://www.ld.com (SYN# 0266 19960129\70-0011.SOL)