The Redwood, like the old Dimension, was barely a subject that could be found on a search engine. Within a week of reaching out to Andy last fall, because I knew he had knowledge on the subject; Joe the UCX Guy posted an abandoned Redwood with some pictures. Unlike his site, that since April 2019, his site, domain and everything is down; Andy from Missouri was able to provide some pics and a pretty detailed narrative. The subject may get technical and may go back and forth between the background of the workgroup-grade Redwood and the carrier-grade PBX. Parts of this narrative is part of that email with Andy, some may have first-person references, and that should not imply me of course.<\/p>\n
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First, the big question: PBX, or Key system\/KSU? The answer is both. At the time, the tariffs\/taxes on key systems were lower in some states, so the Redwood shipped in a key system configuration. One button = one phone line\/trunk, and any\/all phones could ring. The customer could also replace the included Library Card with a PBX Library Card. In PBX mode, all calls ring to the operator (unless in night mode), and could either then be transferred to an extension, or parked on an extension. Instead of selecting an unlit trunk button to make an outgoing call, users would dial an access code (9, usually) to automatically select an available trunk. With a PBX library card, the system could also be operated in a hybrid key system\/PBX configuration. In PBX mode, the system used a Rolmphone 400 as an attendant console (Redwood did not support the traditional Rolm attendant console<\/a>).<\/p>\n\n