Multiservice Switch

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Multiservice Switch or MSS is originally a Nortel line of routers, historically called Passport, designed for carrier core and edge routing. They run the Passport Carrier Release operating system. The MSS has a significant installed base, with over 40,000 switches sold. As of 27th September, 2010, this product line was sold to Ericsson. The Nortel MSS products have been rebranded to Ericsson PPX. You can find the Ericsson product pages at the following link. The MSS has historically gone through two generations of Fabric Control Processors, starting with the i960 initially, and later moving to PowerPC. MSS software development started in 1990 before MSS hardware was available by applying paravirtualization techniques to VxWorks and running each CP or FP application payload on Sun SPARC workstations, each as a Unix user process.