US 5,867,495 · Granted 1999-02-02

How MCI Patented Internet Phone Calls Before Skype Even Existed

In the mid-1990s, MCI invented a system that let you make phone calls over the internet instead of just through traditional phone lines — but still kept track of who you were, how much you owed, and where your call was going. It combined old-school telephone routing with new internet technology to let one network handle calls, data, and other media all at once.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a hybrid network system that routes telephone calls and multimedia data across both traditional phone networks and the internet simultaneously. What's protected here is the method of using both telephony routing information (the old phone system's way of directing calls) and internet protocol addresses (the new internet's way of directing data) to move information from one person to another. The patent also covers capturing a user's complete profile information — name, account, preferences — and using that profile throughout the entire experience to handle routing, billing, and monitoring.

Why it matters

This patent matters because it was filed in 1996, years before VoIP and internet calling became mainstream consumer services. MCI was betting that the future of telecommunications would blend the old telephone world with the emerging internet. By securing this patent, MCI protected the idea of a unified system where users could make calls, send data, and access multimedia through one account and one interface. This approach became foundational to how modern telecom and internet service providers operate today.

Real-world use

Every time you use a phone app like WhatsApp or Skype to call someone over WiFi while also sending a text message, you're benefiting from the kind of hybrid routing system this patent described — combining voice, data, and profile tracking in one network experience.

Original USPTO abstract

Telephone calls, data and other multimedia information is routed through a hybrid network which includes transfer of information across the internet utilizing telephony routing information and internet protocol address information. A media order entry captures complete user profile information for a user. This profile information is utilized by the system throughout the media experience for routing, billing, monitoring, reporting and other media control functions. Users can manage more aspects of a network than previously possible, and control network activities from a central site. Calling card access is provided for users and supports typical calls as well as media transfers over the hybrid network including over the internet.

Patent details

Publication number: US 5,867,495
Filing date: 1996-11-18
Grant date: 1999-02-02
Assignee: Mci Communications Corporations
Inventor(s): ELLIOTT; ISAAC K., KRISHNASWAMY; SRIDHAR
CPC class: H04L12/1485

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