Stephen Nicolle, a 20-year veteran in the telecommunications and technology space, has been appointed acting COO of March Networks Corp. He will be responsible for March's R&D activities and global operations initiatives with a focus on enhancing the company's development, product life cycle and fulfillment strategies. Prior to joining March, he served as president and CEO of Sigma Systems Corp. and Tatara Systems Inc. Nicolle also spent several years at Nortel Networks Corp. as president and GM of the company's OSS software business unit.