... building point-to-point, chain, star or ring networks, with SNCP features, serving departments of Telecom, Traffic or Energy ... Applications OS155-Shelf are: · Cross MUX, becoming the transmission network hinge, capable of providing up to 6 155Mb/s optical ... Wire (EOW) interface (two-line model), with group call and dial functionsPowerful network capacityworking with ZS-OS155-24 can build tangency ring ...