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SPX1581T5

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File Size : 116 KB Manufacturer:Sipex Description:interface between the IMP8980Ds and the filter/codecs. Figure 8 shows the position of these components in an example architec- ture. The Mitel MT8964 filter/codec in Figure 7 receives and transmits digitized voice signals on the ST-BUS input DR, and ST-BUS output DX, respectively. These signals are routed to the ST-BUS inputs and outputs on the top IMP8980D, which is used as a digital speech switch. The MT8964 is controlled by the ST-BUS input DC originating from the bottom IMP8980D , which generates the appropriate signals from an output channel in Message Mode. This architecture optimizes the messaging capability of the line circuit by building signalling logic, e.g., for on-off hook detection, which commu- nicates on an ST-BUS output. This signalling ST-BUS output is monitored by a microprocessor (not shown) through an ST-BUS input on the bottom IMP8980D. Figure 8 shows how a simple digital switching system may be designed using the ST-BUS architecture. This is a private telephone network with 256 extensions which uses a single IMP8980D as a speech

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型号：SPX1581T5 厂家：Sipex 封装：TO263-5 批号：318 数量：4002 说明：QQ：104735486 611606076


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