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China Telecom Completes First Phase of Global Optical Transport Network (OTN)

With increasing demand for bandwidth in China, continued investments in optical wavelength transmission capacity have been needed to relieve chokepoint congestion and improve enterprise application delivery.  China Telecom has addressed this need with the completion of Phase 1 of its next generation global Optical Transport Network (OTN).  The new OTN looks to eliminate such nagging problems that enterprise customers are facing with long delivery times and difficult bandwidth adjustment.

China Telecom’s new OTN brings many features such as bandwidth-on-demand, low latency, high speeds and reliability, and wide coverage.  These features look to improve on the status quo when it comes to enterprise service.  Other features that OTN also bring to the table include cloud network integration features, comprehensive end-to-end protection, 50 ms automatic recovery, and a guaranteed 99.99% network uptime.  A self-service portal with the ability to adjust bandwidth and an initial service delivery time of 7 days round out the features for China Telecom’s new OTN.

Speed is vitally important to any network and China Telecom reads you loud and clear.  The premium Optical Transport Network exceeds 300 Tbps and can have a cap of 100G which is 40 times higher than the current SDH network.  Providing high speeds across the network with 2M-100G end-to-end channels covering wide ranges of service bandwidth granularity.  The OTN also provides support for both TDM services for STM1/4/16/64 and packet services for Fast Ethernet (Fast-E), Gigabit Ethernet (Gig-E), 10G Ethernet and 100G Ethernet.

Due to China Telecom’s system upgrade of their incumbent optical network and equipment, low-bandwidth latency of metropolitan networks will lower by more than 50%.  This improvement will also shave ping times down between cities with one-way delays lowered to less than 5.5ms per 1000 km.

China Telecom is introducing their new OTN in phases with Phase 1 being completed this past Summer.  Phase 1 covered 16 cities including:  Shanghai, Beijing, Shenzhen, Hangzhou, Guangzhou, Nanjing, Chengdu, Wuhan, Tianjin, Suzhou, Chongqing,  and Xi’an.  The remaining 112 cities that will take part in the OTN will be successfully rolled out and operational by December 2019 and include Points-of-Presence (PoPs) at key interconnection data centers globally.