Russia’s TransTeleCom (TTC) has deployed a 40 Gbps link between Moscow and St. Petersburg using equipment from Huawei Technology. 
The 1,141 km network, connecting Moscow and St. Petersburg, requires no electric regeneration. The deployment is believed to be the industry’s longest 40G commercial transport network, according to Huawei.
The solution uses Huawei’s patented SuperWDM technologies. Huawei said its C-band extension patent technology can help operators increase their fiber transmission bandwidth by an extra 20%. Furthermore, Huawei’s 40G transport solution can be upgraded from 10G to 40G without any platform replacement.
Huawei’s 40G solutions have been deployed in Europe, North America, and Asia Pacific. By the end of 2007, Huawei has deployed over 650,000 sets of OptiX optical network series in more than 100 countries. According to Ovum RHK, Huawei ranked No. 2 in the optical network market in the world with a market share of 14% in 2007.http://www.huawei.com
