Time multichannel answer with with answer receive a technology

=80000(frame / second) time slot of × 32(road / frame) × 8(bit/ road time slot) =2048kbit/s=2.048Mbit/s?

If block diagram of machine of PCM30/32 Lu Duan pursues 3 - 4 are shown. ? ?

The signal of one's voice in speech of the user (hair and close) use second line to make transmit, but of upright machine send with receiving spur track is departure, namely hair and closing is to use 4 lines to make transmit. Accordingly, the signal of one's voice in speech of the user needs to alternate via 2/4 line, pass differential transformer namely (end of differential transformer 1~2 is sent with 4 - the transmission attenuation Yue Xiaoyue that 1 termination receives is good, and 4 - the attenuation of 2 end should have been jumped over greatly more, in order to prevent access Zhen Ming) 1~2 carries those who send PCM upright plane to send end, classics enlarge (adjust n of one's voice in speech) , the low wave that connect filter (frequency band of limitative one's voice in speech, prevent fold noise) , sample, add up to road and encode, the PCM code after encode, frame synchronization code, letter makes code, data signal code presses structure of PCM30/32 system frame to arrange in collect circuit, final classics pattern of sling-load alternates the pattern of sling-load that transmits at channel aptly sends toward channel. Sink will receive signal to undertake plastic, second birth above all, turn over commutation through pattern of sling-load next, restore original pattern of sling-load, make PCM code, letter code, frame synchronization code, data signal code is detached by detached circuit again, door of the decipher of classics of code of telephone channel letter that depart gives, shunt restores to give each PCM signal, next classics is low connect flowing, restore signal of each imitate of one's voice in speech, end of 4~1 of transformer of final classics enlarge, differential sends to the user. Place of second birth circuit extracts clock, besides use at sampling to adjudicate, identify each code yuan outside, still control those who receive end to time the system produces place receiving end to need by it all sorts of pulse signal. ?

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