Our website provides a free download of iSoftPhone Classic 4.1 for Mac. The actual developer of this Mac application is Xnet Communications GmbH. This Mac download was scanned by our antivirus and was rated as clean. The software relates to Communication Tools.
From the developer:
iSP is an easy to use Internet phone for macOS using VoIP to provide crystal clear voice quality in an attractively sleek interface. The quick configuration will allow you to get talking to other iSP users in seconds. iSP is integrated with the macOS address book to make calls and manage contacts. Simply dial the number of the person you wish to talk with or select them from contacts to call.
You may want to check out more Mac applications, such as iSoftPhone Pro, Classic Cameras or Classic FTP File Transfer Software, which might be related to iSoftPhone Classic.