Whereas Recommendation Q.750 is an overview of OMAP architecture and its functions, the basic idea of this Guidebook to OMAP Q.756 is to collect background knowledge which is important in using the OMAP Recommendations be it as: network operating administration, deciding on their application; provider of Operating Systems (Oss) for TMN; operator working at non-TMN terminals. This Guidebook refers to the White Book version of OMAP.