File:PSTN office classification hierarchy.png
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![File:PSTN office classification hierarchy.png](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/PSTN_office_classification_hierarchy.png/800px-PSTN_office_classification_hierarchy.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:50, 30 March 2007 | ![]() | 1,160 × 795 (11 KB) | commons>PNG crusade bot | __NOTOC__ == Summary == Luis F. Gonzalez, self == Licensing == {{self2|GFDL|cc-by-2.5}} == Automatically converted to PNG == The PNG crusade bot automatically converted this image to the more efficient PNG format. The image wa |
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