{"product_id":"9781587052576","title":"Voice over IP Fundamentals","description":"\u003cp\u003eA systematic approach to understanding the basics of voice over IP\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cli\u003eUnderstand the basics of enterprise and public telephony networking, IP networking, and how voice is transported over IP networks \u003c\/li\u003e\u003cli\u003eLearn the various caveats of converging voice and data networks \u003c\/li\u003e\u003cli\u003eExamine the basic VoIP signaling protocols (H.323, MGCP\/H.248, SIP) and primary legacy voice signaling protocols (ISDN, C7\/SS7) \u003c\/li\u003e\u003cli\u003eExplore how VoIP can run the same applications as the existing telephony system but in a more cost-efficient and scalable manner \u003c\/li\u003e\u003cli\u003eDelve into such VoIP topics as jitter, latency, packet loss, codecs, QoS tools, and security\u003c\/li\u003e \u003cp\u003e\u003c\/p\u003e\u003cp\u003eVoice over IP (VoIP) has become an important factor in network communications, promising lower operational costs, greater flexibility, and a variety of enhanced applications. To help you understand VoIP networks, \u003ci\u003eVoice over IP Fundamentals\u003c\/i\u003e provides a thorough introduction to the basics of VoIP.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003ci\u003eVoice over IP Fundamentals\u003c\/i\u003e explains how a basic IP telephony infrastructure is built and works today, major concepts concerning voice and data networking, and transmission of voice over data networks. You’ll learn how voice is signaled through legacy telephone networks, how IP signaling protocols are used to interoperate with current telephony systems, and how to ensure good voice quality using quality of service (QoS).\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eEven though \u003ci\u003eVoice over IP Fundamentals\u003c\/i\u003e is written for anyone seeking to understand how to use IP to transport voice, its target audience comprises both voice and data networking professionals. In the past, professionals working in voice and data networking did not have to understand each other’s roles. However, in this world of time-division multiplexing (TDM) and IP convergence, it is important to understand how these technologies work together. \u003ci\u003eVoice over IP Fundamentals\u003c\/i\u003e explains all the details so that voice experts can understand data networking and data experts can understand voice networking.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe second edition of this best-selling book includes new chapters on the importance of billing and mediation in a VoIP network, security, and the common types of threats inherent when packet voice environments, public switched telephone networks (PSTN), and VoIP interoperate. It also explains enterprise and service-provider applications and services. \u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Cisco Press","offers":[{"title":"Default Title","offer_id":47036639936752,"sku":"9781587052576","price":80.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781587052576_p0.jpg?v=1763803520","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781587052576","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}