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310-200-500 Switched Services Networks Using Central Office Switching Machines - Transmission Testing Methods in 4-Wire No. 5 Crossbar Offices 1 1963-11-01

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310-200-501 Switched Services Networks Using Central Office Switching Machines - Transmission Testing Methods in 2-Wire No. 5 Crossbar Offices 1 1963-11-01

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310-200-502 Switched Services Networks Using Central Office Switching Machines - Transmission Testing Methods at PBXs 1 1963-11-01

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310-200-503 Switched Services Networks Using Central Office Switching Machines - Transmission Testing Methods at Subscriber Stations 1 1963-11-01

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310-200-503 Switched Services Networks Using Central Office Switching Machines - Transmission Testing Methods at Subscriber Stations 2 1964-12-01

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310-200-550 Switched Services Networks Using Central Office Switching Machines - Balance Testing Methods in 2-Wire No. 5 Crossbar Offices 1 1963-12-01

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310-280-100 19A Testboard - General Description 2 1966-03-01

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310-280-300 19A Testboard - Measurement and Adjustment of Pads for the Transmission Measuring Circuit 1 1963-08-01

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310-280-500 19A Testboard - Measurement of Office Losses at 1 kc - Relative Envelope Delay and Frequency Response Measurements 2 1966-03-01

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