Siemens 600 Series - Manual (Page 177)

ROLMphone Differences on Release 9006i C–3
Introduction
This appendix briefly summarizes the differences in
ROLMphone features on the Release 9006i CBX
software compared to those of previous CBX
releases. See the appropriate sections in this guide for
more detailed explanations of these features and how
they are used.
In general, most features operate in the same way as
before or with only very small modifications.
However, the Release 9006i software does offer some
new features as enhancements, some of which replace
previous features.