Huawei is now a China Telecom’s partner in the global deployment of the backbone optical transport network (OTN).

With this new agreement, Huawei marks another important milestone in its international deployment and in the management of the big projects.

In this project, Huawei will employ its OTN + wavelength-division multiplexing (WDM) solution to efficiently deploy the high-bandwidth international private line services. The backbone OTNs will cover the US, UK, Sweden, Germany, Singapore, Hong Kong, and eight provinces of mainland
China and multiple core nodes in these regions. The OTNs will connect to various carrier networks around the world and expand with the development of services.

Connectikpeople discovers that, prior China Telecom used to deploy international private lines based on an SDH+WDM solution. This means, the SDH was used at the access layer, while large-capacity WDM was used at the aggregation and backbone layers. ‘’However, SDH, which provides limited access, switching, and line capacities, has become inadequate in face of the rapid expansion of large-granularity private line services. Scheduling of large-granularity services, if based on SDH, is technically complex and causes high costs’’.

Henceforth in this project, China Telecom adopts the innovative OTN+WDM solution, in which OTN, instead of SDH, is used for service access and scheduling.

According to Huawei, OTN features high access capacities and flexible scheduling of large-granularity services, simplifying the scheduling of large-granularity services and standing as an inspiring case for the industry.