 The Redwood, often called the "Deadwood" by many ROLM techs because it never caught on, was intended to compete with the Nortel Norstar Key System.When Siemens bought ROLM from IBM and introduced their "newer" models, which were renamed Siemens switches, the early ROLM phone switches were widely pressed into service as old technology (though a number of 8000 and 9751-9005 CBXs remain online at some companies), but the digital phone handsets were quite valuable for those expanding their phone networks.The later ROLM 9200 (actually a Siemens HCM200 Hybrid system renamed) was more competition for the leading Key Systems as the 9200 had intensive Least Call Routing software, which the Redwood did not.