SDH device ring network application scheme

With the development of industry communication, the transmission technology of SDH equipment in the traditional network is also changing with each passing day. Large-capacity, multi-type audio services and data services urgently need optical transmission equipment that can access SDH network with large transmission capacity and complex networking functions. Accordingly, our company independently developed a STM-16 level SDH optical transmission equipment, the SDH optical transmission equipment has a large transmission capacity, rich service interface characteristics can greatly meet the needs of industry communication in the service transmission.
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1 Solution Features
SDH device network requirements for optical transmission systems have the following characteristics:
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² Large capacity of service transmission;
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² Complex networking capability;
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² Powerful capacity expansion;
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² Strong self-healing protection.
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2 Application Scheme

The scheme shown above has the following characteristics:
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² Flexible networking structure: multiple MSTP devices form two different levels of tangential ring network, each MSTP device in the ring network can form a star network or ring network with other SDH devices, PCM devices and user devices, to achieve flexible networking in different application environments;
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² Large service transmission capacity: various services between two tangential ring networks can be cross-transmitted through tangential MSTP devices to achieve non-blocking transmission of various services between different networks, effectively expanding the transmission capacity of the communication network;
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² Strong transmission reliability: SDH ring network has a strong channel protection ability, abnormal alarm reporting ability, the central end will detect in time when the network transmission is abnormal, providing a strong basis for fault location and timely elimination;
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² Large capacity expansion potential: MSTP devices have different levels of optical interfaces and rich service interfaces, supporting complex network re-expansion;
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Easy maintenance: Other devices in the entire network can be monitored and managed online in real time through the gateway device in the network.