Agreements and related records concerning the purchase of L M Ericsson multiplexing equipment NEMLC, and lease of the equipment by MCI Equipment Corporation. Also includes purchase agreements, purchase orders, and equipment price lists.

Agreements related to MCI Equipment Corporation's lease of ESE equipment from North American, and the sublease of the equipment to MCI Telecommunications Corporation.

Agreements for lease of power backup equipment.

Agreements related to the lease of power backup equipment.

Lease agreements including purchase orders for terminal and repeater station equipment.

Lease agreements for signaling and distribution equipment.

Lease agreement including purchase orders.

Lease agreement between Northern Telecom Inc. and Mellon National Leasing Corporation, for lease of a Danray CTSS-4000 computerized tandem switching system; lease between Northern Telecom Inc. and MCI Equipment Corporation for CTSS-4000 unit initially leased from Mellon.

Correspondence concerning MCI's provision of Telemanagement services to PepsiCo Inc.

Contract and related financial agreements between Raytheon Company and Microwave Communications Inc. Raytheon constructed, maintained, and modified a number of microwave routes, including the Chicago to St. Louis route. Also includes specifications and construction schedules for the Chicago to St. Louis route; tower constructions revisions; parts and equipment lists.

Agreements for lease of satellite channels between San Francisco and New York, Chicago, and Houston, by MCI Telecommunications Corporation.

Records related to the agreement with Collins Radio Company for the sale of Spectrum Analysis & Frequency Planning Inc.'s assets.

Records related to proposed lease agreements between MCI and Western Union, for bandwidth and transmission capacity on various domestic routes.

Agreements between Western Tele-Communications Inc. and American Satellite Corp., Cubic Corporation, and Western Union Telegraph Co., for lease of bandwidth and transmission capacity.