ocr: ms 3,0 2.5 2,0 5 a a 1.5 1,0 0,5 0 400 800 1200 1600 2000 2400 2800 3200 Hz Frequency CCITT-49030 Alternative Recommended / / H * Frequency Band with defined characteristics for Signalling System No. 6. FIGURE 16 Permissible variation of overall delay distortion with frequency for the voice-trequency channel (Alternative if tests confirm suitability)
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