Time multichannel answer with with answer receive a technology

Join all the way when signal, k2 of rotary switch receiving end also must join all the way, will not receive end to this road signal otherwise, close for this requirement, the synchronism that hair both sides must maintain strict. Does the number after is time answer used shed signal graphic representation at the graph 3 - 2?

1.1 time answer the synchronous technology in using?

Time answer includes bit alignment with the synchronous technology in communication (clock is synchronous) with frame synchronization, this is another when the number corresponds important characteristic. Bit alignment is the basiccest synchronism, it is the premise that realizes frame synchronization. The basic meaning of bit alignment is to close, the clock frequency that sends two end plane must is the same as frequency, inphase, each stack that such sink ability are received correctly and the court decision sends end to deliver yuan. Close to achieve, inchoative frequency is the same as frequency, inphase, when the design transmits pattern of sling-load, the clock frequency part that delivers end should be contained in wanting to consider transmission pattern of sling-load commonly. Such, sink gives inchoative clock frequency to control clock receiving end from the extraction in receiving PCM to pile up, can accomplish bit alignment. ? ?

Frame synchronization is to assure to close, the telephone channel that sends each correspondence keeps consistent on time, such sink can receive the signal of each telephone channel that sends end to deliver correctly, come true below the premise that this must be synchronism of v/arc be on the throne of course. ?

Close to build, the frame synchronization that delivers a system, need is in each frame (or a few frame) medium fixed position inserts the frame synchronization that has specific pattern of sling-load to pile up. Such, want to receive end to be able to identify a these frame synchronization codes correctly only, can discern correctly the from beginning to end that gives each frame, can distinguish correctly thereby each signal that end setting out delivers.

? 1.2 time answer used frame structure

? It is with system of PCM30/32 road phone now exemple, the frame structure that will explain time answer is used, the PCM signal that such formation calls signal of PCM primary group. ?

In discussion time multichannel answer is used ever pointed out when the principle, time multichannel answer used means is to use time slot to come intersected, each signal allocates a time slot to call a road time slot, frame synchronization is piled up and believe your code to also allocate time slot of a road each. Cent of whole department altogether is the means of PCM30/32 system 32 roads time slot, among them 30 roads time slot is used respectively deferent signal of 30 one's voice in speech, time slot of a road uses deferent frame synchronization to pile up, another road time slot uses deferent letter to make pile up. Graph 3 - the 3 frame structures that are regulation of CCITT proposal G.732. ? ?
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