NIPPON TELEGRAPH AND TELEPHONE CORPORATION International Procurement Office; Tokyo Opera City Tower 26F 20-2 Nishi-Shinjuku 3-chome Shinjuku-ku, Tokyo 16314 Japan

58 -- I)DSU(DIGITAL SERVICE UNIT) FOR BRI(BASIC RATE INTERFACE) OF ISDN(INTEGRATED SERVICES DIGITAL NETWORK) (II)THE EQUIPMENT WITH A BUILT-IN DSU FOR BRI OF ISDN SOL IPO.09-5018 DUE 111097 POC Point of Contact -- NTT America, Inc., Head Office, 101 Park Avenue, 41st Floor, New York, NY 10178, 212/808-2296 also NTT America, Inc., Pacific and Western Division 700 E. El Camino Real, Suite #200, Mountain View, CA 94040, 650/940-6565 WEB: NTT International Procurement Information Home Page, http://wwwipo.nttinfo.ntt.co.jp. This public notice is to request suppliers to provide NTT with general referential information on similar products or technology prior to procurement of the intended product (mentioned below) by NTT. This public notice is also to request that any suppliers wishing to participate as a subcontractor in the procurement program of this product should declare their intentions to that effect. This public notice is not intended to guarantee public notification of procurement of the product. (1) Name: (i)DSU(Digital Service Unit) for BRI(Basic Rate Interface) of ISDN(Integrated Services Digital Network) (ii)The Equipment with a built-in DSU for BRI of ISDN (2) Overview: (i)DSU for BRI of ISDN can be used at user's premises with the BRI of ISDN to terminate Digital Subscriber Line utilizing a two-division transmission system based on TTC standard JT-G961 and to connect to any of the customer's equipment. (ii)The Equipment with a built-in DSU for BRI of ISDN contains functions described in (i) and is connected with BRI of ISDN. (3) Contents of RFI: NTT is inviting the following types of information on a product or technology similar to the above-mentioned system. This is not, however, a request for suppliers to provide proprietary and/or confidential information, (a) Technical information (including product catalogues, sample system configurations, etc.) -Main features -Performance(Rate of transmission; network interface, etc.) -Condition for environment(Ambient temperature and humidity, etc.) -- -Condition for installation(Method of installation; earth quake resistance, etc.) -Durability(Lifetime during operation and its definition and judgment method) -Accessories supplied (b)Price -Units price -Optional component price -System price (c) Standard time of delivery after ordering (d) Sales records (e)Other -Development design of future -Trouble shooting system and maintenance support system -Active proposals likely to become useful for increasing the businesses of NTT (4) Request for Declaration of the Intention of Participating as a Subcontractor: Any suppliers wishing to participate as a subcontractor in the product procurement program of NTT, are requested to supply NTT with the information listed below. After preparing a list of supplied information, NTT will provide the list to suppliers who wish to be provided with it, to those who have responded to the request for supply of the information listed and to those who have purchased the PROCUREMENT DOCUMENTATION relating to procurement of the product. NTT, however, will undertake no responsibilities for any outcomes arising from supply of the list, (i)Name of supplier, (ii)Place of contact (Address, name of the person in charge, telephone number, and facsimile number). (5) Deadline of submission of materials and comments: 3:00 PM, November 10, 1997 Local time of the reception offices(Mail must arrive no later than the above date). (6) Language: Japanese or English***** (0281)

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