TSPOI-7I3O

 LTE Band 41 / LTE Band 1 / LTE Band B3 / LTE Band 8 / LTE Band 40/ 警用 / 消防 

7進3出（POI）是一個多系統組合平台，它將不同的載波訊號組合起來並輸出到公共的分散式天線系統。同時將不同的上下行訊號分配到各系統，實現多頻段、多重訊號組合，避免分散式天線系統的冗餘建設。這是實現多網路不同訊號覆蓋的可行、有效的措施。 

基地台站點數量的快速成長凸顯了網路營運商共址的必要性。營運商之間潛在的干擾是巨大的，需要應用現代過濾和組合技術，以允許現有蜂窩網路的持續成長和新網路的引入。

透過使用 POI 組合器（組合來自許多蜂窩提供者的訊號/載波），室內覆蓋變得可行。 通馳POI合路器應提供良好的隔離度（帶內和帶外）、良好的功率處理能力和出色的IMD，以產生干擾較少的和諧組合。 

Tone Spread point of interface 7 Input/3 Output POI is a platform for multi-system combination which combines different carrier signals and output them to the common distributed antenna system. At the same time, it distributes the different uplink signals to their each system, realizing multi-band and multi-signal combination and avoiding redundant construction of distributed antenna system. This is a feasible and efficient measure of realizing the coverage by different signals from multi -networks.

The rapid growth in the number of base station sites highlights the necessity for network operator co-location. The potential for interference between operators is vast and requires the application of modern filtering and combining technologies to permit the continued growth of existing cellular networks and introduction of new ones. 

Indoor coverage becomes feasible by using a POI combiner which combines signals/carriers from many cellular providers. POI combiner should provide good isolation (in-band & out-band), good power handling ability and excellent IMD to generate a harmony combination with less interference.