Data Meets Voice SS7 Crosses the Bridge to the Packet World By Bing Yang Posted: 10/1999 The report of the death of the public switched telephone network (PSTN) has been greatly exaggerated.
A mere 25 million of the more than 450 billion domestic minutes in 1998 were from packet voice. Further, intelligent network (IN) services were, until recently, unavailable to users of voice over packet services. The PSTN infrastructure and the signaling protocols that support it are far from moribund.
Many existing and emerging service providers recognize the significant capital, facilities, support systems and personnel savings that utilization of a data, rather than circuit-switched, infrastructure can provide. Asynchronous transfer mode (ATM) and transfer control protocol/Internet protocol (TCP/IP)-based networks are springing up that will be used not just to provide traditional data services such as frame relay and Internet access, but also to provide the traditional telephony services enterprises and consumers have come to expect and rely on. With distributed call control, centralized signaling and billing as well as integration with existing PSTN protocols and services, these networks will deliver innovative, cost-effective voice and data service solutions into the 21st century. Today's service providers can make this transition easier by effectively leveraging signaling system 7 (SS7). -------- Complete story @ x-changemag.com free registration. There is a good SS7 graph worth a look. x-changemag.com I will e-mail SI to get ILUM a quote and volume box at the bottom of the page.
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dkg |