Isbn: 9787121004667 - 较交换应用技术 上海伟功网络通信技术有限公司著 电子工业出版社 (1 Ergebnisse)

paperback. Zustand: New. Language:Chinese.Pages Number: 358 Publisher: Electronic Industry Publishing House Pub. Date :2004-11. IP phone system from birth 10 years ago has been subject to people s attention. and gradually affect people s lives. its technology and applications are constantly changing. With the development of soft-switching systems. IP telephony applications and the application model has reached a new height. This book systematically and comprehensively describes the soft-switching systems and related .…