China Telecom selects Huawei

Huawei has been selected by China Telecom for the global deployment of its the backbone optical transport network (OTN).

Huawei will employ its innovative OTN + wavelength-division multiplexing (WDM) solution to deploy the high-bandwidth international private line services. This project will help enhance China Telecom in the international private line market.

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.

"China Telecom used to deploy international private lines based on an SDH+WDM solution. In this solution, SDH was used at the access layer, while large-capacity WDM was used at the aggregation and backbone layers," the company mentioned in its statement.

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.

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

As of July 2013, Huawei's 100G network has been serving 100 customers worldwide. By building information networks as wide as the Pacific Ocean, Huawei delivers high-speed connectivity anywhere to enrich people's lives.