This 3D model was originally created with Sketchup 7 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Cisco 6260 Dslam used in Telco Central Office to provide ADSL to copper land line subscribers.. Its now EOL (end of life) most likely as its uplinks were kind of limited to either OC3 or T3/E3. Another victom of NextGen or whatever they are calling the internet today.