Nortel Networks, a leading manufacturer of network components and solutions provides its products with all necessary system software in order to meet various needs of its customers. This approach ensures customer's satisfaction providing full flexibility for software upgradeable network units. You'll experience no problems with feature-rich software options from Nortel Networks. The installation process is simple and the only thing you need is to choose a software option, which can serve your purposes best of all.??Nortel Networks offers a firmware version B upgrade kit.