The ZY-MSAP155 realized the dream that combines the PDH and SDH as unity. This remote terminal of platform could supply Zhengyou S -series PDH, PDH-MSTP, SDH and Data transceiver, and host chassis is ZY-MSAP155. The ZY-MSAP155 can achieves time slot intersection based on 2M and 64k(DXC), combined PDH and SDH advantages togethe.

In addition to processing the features of S series PDH transceiver and holding the capacity of inter-connecting at the optical lines, the important improvement is that product increased four-port Ethernet function by the line speed of 100M. So it realized that combined E1 interface of traditional PDH and 100M Ethernet data into one 1U chassis. .

S series PDH optical transceiver realized inter-connecting optionally in whole series of ZhengYou products, Ended the history that different type of transceivers unable to connect each other, formed uniform network management system.

ZYEQ-155/622 SDH-MSTP is compacted SDH Add-Drop multiplexer (ADM). Using 19-inch chassis, this system design is modularized device, proportionally adding extra configuration as well. System can provide termination configuration, monitoring, maintenance and software download.

ZYEQ-BSA series product is a kind of integrated service access and exchange device based on ATM technology; it supports DDN, FR, Ethernet, ATM services for connecting exchanging and concentrating, furthermore, Has ability of telecom-level reliable design and perfect network management.