SAN FRANCISCO, CA—(Jul 22, 2011) - ServiceSource®, the global leader in Service Revenue Management, today announced a partnership with Siemens Enterprise Communications, a premier global provider of end-to-end enterprise communications solutions. Under the new relationship, ServiceSource will become the exclusive provider of renewals for maintenance contracts for telephony equipment, software and hardware for designated accounts in Siemens Enterprise Communications’ North American operations over the next....