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In an effort to find a more effective solution to support a software inventory application were introduced. The term integrated services (as in Integrated Services Digital Network [ISDN] or the IETF Integrated Services [IntServ] model) refers to the mixing of different types of traffic, such as voice, video, and data, over a single packet-switched network. ISDN, which is considered by some to be the first foray into an architecture for converged networks, defines how data protocols can be carried over a circuit-switched infrastructure that natively supports voice. The PSTN evolved slightly with the introduction of ISDN. However, with the exception of a handful of countries in Europe, ISDN never really took off. This was primarily because of nontechnical reasons, such as the pricing strategies that the providers adopted.
In the late 1990s, IP won out as the technology of choice for converged networks because of its ease of use, ubiquity, and advances in handling real-time software inventory application.
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