You are downloading the Sipmobile XAP file v1.0.0.0 for Windows Phone. Sipmobile is a free Social App: Free calls to US and Canadian numbers. Free calls to more than 2000 VoIP networks. For instructions please visit. You can now download the offline XAP package file to install & try it.
Download Locations for Sipmobile 1.0.0.0 XAP file
Package File
Please Click Here > to retrieve available package files for Sipmobile.
Please be aware that the Sipmobile XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Sipmobile or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Sipmobile XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.