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发表于2024-11-27
综合业务数字网 pdf epub mobi txt 电子书 下载 2024
《ISDN综合业务数字网》内容简介:Much has happened in the evolution of ISDN since this book, and the subsequent editions, were published. Not only have "narrowband" ISDN standards, products, and services evolved and matured, but applications have grown. ISDN is finally beginning to realize its promise Of even more significance perhaps, is the emergence of Broadband ISDN (B- ISDN) technologies and services B-ISDN received passing mention in the first edition of this book and at least one dedicated chapter plus promi- nent mention in other chapters in the second edition; this treatment was pretty much consistent with what details of B-ISDN were known at the time of the writing In this edition, B-ISDN occupies a significant portion of the book.
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综合业务数字网 pdf epub mobi txt 电子书 下载 2024