Funny thing, in Siemens 3000 training they point out that if Siemens didn't make the tech parts cumbersome then we would be out of a job! I thought that was funny.
Siemens has actually developed into a very good product after buying out IBM-Rolm. Thank God the 9200's are disappearing, those things would drop cards if you sneezed in the building! My father worked for Rolm, was a great company. The biggest issue (not problem) is Siemens is German engineered and some things that are important in telephony in USA are worthless features in Europe so the design was hard to get customers to like, it was different than what they were used to.
If you have any further Rolm questions I would be happy to help however I can if u ever need me too.