VoIP - Voiceover Internet Protocol - allows telephone calls to travel via the Internet rather than through traditional land-based transmission lines.
While VoIP systems can reduce the cost of individual telephone calls, they can also be a factor in the lower quality audio your callers experience. Read "Why Does Some On Hold Marketing Sound Bad?" in the BusinessVoice blog.
Also, an I.T. professional is often needed to upload On Hold Marketing files to a VoIP telephone system. That can cause a headache or two for a company's marketing team. Read one such story in this BusinessVoice post: "VoIP: A Potential Problem to Consider."