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1991-12-11
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OCR:
300 2000 H OQ7E Freguency (tog CCITT- 72730 FIGURE 1/Q.552 Minimum valQC of return toss arainst the teat network for the ttmoe intertoce 400H Frequency 72230 valuc ceturn against cxchange impedance wire interface
(.png)
(.png)
