Windows examines the file extension when you double-click to open a file. If Windows recognizes the extension, it opens the file in the associated program. When Windows does not recognize an extension...
Windows examines the file extension when you double-click to open a file. If Windows recognizes the extension, it opens the file in the associated program. When Windows does not recognize an extension, you see a message to select an app to open the file. This means Windows does not have a default program for the .ipu file type.
The .ipu extension is for Vocaltech iPhone user data. Vocaltech iPhone was a Voice over IP application developed in 1995. Ipu files store user data from the Vocaltech iPhone program. This file type is marked obsolete and no longer supported.
Ipu files are associated with the Vocaltech iPhone program. Vocaltech iPhone was a voice over IP application developed in 1995. Ipu files store Vocaltech iPhone user data. The .ipu file format is deprecated and no longer supported.
The .ipu extension is for Vocaltech iPhone, a voice over IP application from 1995. Ipu files store Vocaltech iPhone user data. This file type is obsolete.
We do not fully describe the .ipu format. But we know programs that open .ipu files from user suggestions. If you cannot open an .ipu file, you may not have the right app. We will investigate this file type more. Please check back for updated info.
Adobe Photoshop
GIMP
IrfanView