{"product_id":"internet-telephony-call-processing-protocols-1","title":"Internet Telephony: Call Processing Protocols","description":"Written for engineers, managers, and users, this book begins with an overview of basic telephony call processing, focusing on the differences between traditional circuit switching and more contemporary packet-based networks. A section discusses telephony routing over IP. Major standards and protocols are described in detail. Particular attention is given to H.323, SIP, Megaco Protocol, and MGCP.","brand":"bookshop.lol","offers":[{"title":"Thryft - Used (Like New)","offer_id":42530334965838,"sku":"9780130255655","price":6.9,"currency_code":"SGD","in_stock":false},{"title":"Thryft - Used (Very Good)","offer_id":42530334998606,"sku":"9780130255655","price":4.9,"currency_code":"SGD","in_stock":false},{"title":"Thryft - Used (Good)","offer_id":42530335031374,"sku":"9780130255655","price":3.9,"currency_code":"SGD","in_stock":false},{"title":"Thryft - Used (Well Read)","offer_id":42530335064142,"sku":"9780130255655","price":3.9,"currency_code":"SGD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/3857\/4926\/files\/3214218_72fac1dc-a474-4938-9fc8-080855a4c5e7.jpg?v=1747389331","url":"https:\/\/bookshop.lol\/products\/internet-telephony-call-processing-protocols-1","provider":"bookshop.lol","version":"1.0","type":"link"}