BEIJING HUAHUAN ELECTRONICS Co., LTD.
H9MO-1641S User Guide V2.2
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General
The H9MO-1641S is a classic STM-1 SDH fiber optic Multiplexer (at a transmission rate of
155.520Mbit/s), mainly designed for access networks and various dedicated networks. With
state-of-art compact design, it is a new generation of MSTP (Multi-Service Transport Platform) for
optic network transport and access.
The H9MO-1641S can be configured as terminal multiplexing (TM) equipment, add/drop
multiplexing (ADM) equipment or relay equipment, and is suitable to for optical transmission
networks such as chain networks and dedicated protection rings. The H9MO-1641S provides an
optional 3 optical directions; and total of 16 transparent channels for digital transmission at
2048kbit/s (E1) between nodes. Furthermore, the equipment can also provide fast Ethernet and
other data service access and transmission; for use in telecommunication services and wideband
data applications.
H9MO-1641S can synchronize with external clocks, line clocks or internal high precision oscillating
sources. It supports two input clocks (2Mbit/s or 2MHz) and one output clock (2Mbit/s or 2MHz). The
system clock processing circuit is based on self-developed algorithm and realization chips, greatly
increasing the synchronization characteristics of SDH networks, offering a timing guarantee for
configuring multi-node networks with complicated topological structures. Special technical provisions
have been adopted in the equipment to suppress LF jittering in the E1 channel, with parameters that
exceed the requirements in the latest ITU-T G.823 recommendation.
H9MO-1641S integrates the data service access, exchange and transmission, and has greatly
raised the transmission efficiency by means of the statistical multiplexing feature for data services. It
also adopts the most advanced MPLS labeling technology, to classify data services, provide differential
service quality for different customers, thus increasing the exchange efficiency, enhancing the system
stability and offering full management control for customers. The system is also provided with a service
telephone subsystem, enabling hotline, point-to-point or point-to-multipoint dialing for voice
communication that especially useful for system provisioning.
The network system designed with the H9MO-1641S multiplexer can be managed by our SNMP
supervision software (H7GMSW). The network operation conditions can be monitored in real time via
the supervision system, to control the loop back testing, manage channel resources and general
network management. The main control console of the supervision system is based on a Windows
environment with the usual visual user interfaces, featuring simple operation and ease of use. The
dedicated interface adopts a TABS protocol, and is connected with the main control console via RS485
bus. A portable supervision computer can be connected via an RS232 interface.
