Kaufman Bros. Maintains a 'Hold' on Sonus Networks (SONS); Reducing 2012 Estimates; Likely Carrier Headwinds in 1H12 Dec 20, 2011 01:36PM
Kaufman Bros. Starts Sonus Networks, Inc. (SONS) at Hold; Continued Operational Improvements Likely in 2011 Jul 29, 2011 07:14AM