second dimension can be derived from the extent of focus on the telecommunications industry. Figure 2 presents the classification of the types of OSS/BSS vendor strategies. Focus on telecommunication Niche 0SS Generic telco vendors vendors Breath of operations Specific SW Generic SW companies manufacturers Fig. 2 A classification for OSS/BSS vendor market scope analysis Table 2 Number of vendors and average revenue by breadth of operations and telecommunica- tions focus in the year 2005 Telecommunications focus (% of revenue from telecommunications industry) 50-90% Total Breadth of Average OSS Average OSS Average OSS Average OSS operations revenue revenue revenue revenue Narrow-1 M$ 14.9 M$ 20.7 M$ 19.9 M$ 19.1 Vertical-2 M$ 155.0 M$ 66.4 M$ 40.6 M$ 63.3 Layer-3 M$ 124.2 M$ 80 M$ 29.4 M$ 62.3 Broad-4 M$ 82.3 M$ 272.7 M$ 224.6 M$ 218.4 Service 43 M$ 217.5 M$ 39.4 12 M$ 103.8 M$ 171.5 providers Total 63 M$ 593.9 35 M$ 407.2 90 M$ 418.3 M$ 534.6 E. Luoma et al. In order to test the above classification of market scope strategies, Frank et al. (2007) analyzed OSS vendor revenues from 2005, using the data covering a total of 186 companies operating in the OSS/BSS market. The service providers, such as systems integrators, were excluded from the analysis and placed into a separate category outside the strategies listed. Then, the software product vendors were categorized according to the breadth of their operations and focus on the telecom- munications industry. Table 2 presents the number of vendors in these categories. Based on this analysis, a conclusion can be made that all the hypothesized strategies were deployed in 2005: the OSS market has vendors with narrow niche, vertical, layer and broad strategies, and companies classified as service providers (with no software products). About half of the vendors operating in the OSS markets can be considered to focus on the telecommunications industry. About a third of the firms operating in these markets receive less than a half of their revenues from telecommunications.