Sigma Systems' Kerbey Altmann to Discuss OSS Best Practices at 2010 FTTH Conference and Expo TORONTO--(Marketwire - August 31, 2010) - What: Kerbey Altmann, director of Solutions Architecture for next-generation OSS provider Sigma Systems, will share best practices for OSS service...

Sigma Systems to Host EVOLVE 2010 User Conference for Telecom and Cable Service Providers TORONTO--(Marketwire - July 21, 2010) -  Sigma Systems, an industry leader in Advanced IP Service Fulfillment solutions, today announced that it will host EVOLVE 2010, its third-annual user...