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现货 IP 电话:部署 VoIP 协议和 IMS 基础设施IP Telephony:Deploying VoIP Protocols and IMS Infras 9780470665848
[预订]The Thermionic Valve and Its Developments in Radiotelegraphy and Telephony 9781015773448
【预售】Cisco Avvid and IP Telephony: Design
预订 Telephony, the Internet, and the Media
[预订]Telegraph And Telephone Age: Telegraphy-Telephony-Radio, (Jan. - Dec., 1917) 9781013585845
【预售】A Village Goes Mobile: Telephony, Me...
【预售】Enterprise Networks and Telephony: From Technology
【预售】Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise
[预订]Multiplex Telephony and Telegraphy by Means of Electric Waves Guided by Wires 9781019006122
【预售】Computer Telephony Encyclopedia
【预售】Building Enterprise Ready Telephony Systems with
【预售】Pbx Systems for IP Telephony, Migrating Enterprise
【预售】Wi-Fi Telephony: Challenges and Solutions for Voice
【预售 按需印刷】Wireless Telegraphy And Wireless Telephony
【预售】Mobile Video Telephony: For 3g Wirel...
【预订】Ip Telephony - Deploying Voip Protocols and Ims Infrastructure 2E
海外直订Wireless Telephony, in Theory and Practice 无线电话理论与实践
【预售】VoIP Hacks: Tips & Tools for Internet Telephony
海外直订Management of Speech and Video Telephony Quality in Heterogeneous Wireless Netwo 异构无线中语音和视频电
预售 按需印刷PSTN-IP Telephony Gateway for Ensuring QoS in Heterogeneous Networks
[预订]Multiplex Telephony and Telegraphy by Means of Electric Waves Guided by Wires 9781019011119
海外直订Design and Cryptanalysis of Zuc: A Stream Cipher in Mobile Telephony 移动电话流密码Zuc的设计与密码分析
【预售 按需印刷】Building Telephony Systems with Opensips 1.6
海外直订Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise 星号:面向企业的开源电话
海外直订IP Telephony Over IUG Network IUG上的IP电话
海外直订Wireless Telegraphy and Telephony: An Outline for Electrical Engineers and Other 无线电报和电话技术:电气工
海外直订Enterprise Networks and Telephony: From Technology to Business Strategy 企业和电话:从技术到商业战略
【预售 按需印刷】Building Enterprise Ready Telephony Systems with sipXecs 4.0
海外直订Multiplex Telephony and Telegraphy by Means of Electric Waves Guided by Wires 利用导线引导的电波的多路电话
【预售 按需印刷】Building Telephony Systems with OpenSIPS - Second Edition
【预售 按需印刷】Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony etc. etc.
【预售 按需印刷】FreePBX 2.5 Powerful Telephony Solutions
预订 按需印刷 Telephony the Internet and the Media
【预售】Wireless Telegraphy and Telephony: An
【预售】Freepbx 2.5 Powerful Telephony Solutions
海外直订Converged Communications: Evolution from Telephony to 5g Mobile Internet 融合通信:从电话到5g移动互联网的演
【预订】Ims Multimedia Telephony Over Cellular Systems - Voip Evolution in a Converged Telecommunication World
海外直订Pbx Systems for IP Telephony, Migrating Enterprise Communications 用于IP电话、迁移企业通信的Pbx系统
【预售 按需印刷】Wireless Telegraphy And Telephony (1906)
现货 Ims Multimedia Telephony Over Cellular Systems 【中商原版】
【预售】Wireless Telephony, in Theory and Practice
【预售】Digital Telephony and Network Integrat
海外直订IP Telephony Interconnection Reference: Challenges, Models, and Engineering IP电话互连参考:挑战、模型和工程
【预售 按需印刷】IP Telephony Over IUG Network
【预订】Networks: Internet . Telephony . Mul...
海外直订Digital Telephony and Network Integration 数字电话和集成
【预订】Computer Telephony Integration, Second Edition
海外直订PSTN-IP Telephony Gateway for Ensuring QoS in Heterogeneous Networks 确保异构QoS的PSTN-IP电话网关
海外直订Telephony, the Internet, and the Media: Selected Papers From the 1997 Telecommun 电话、互联网和媒体:1997年
海外直订Voip Hacks: Tips & Tools for Internet Telephony Voip黑客:互联网电话的技巧和工具
海外直订Asterisk Cookbook: Solutions to Everyday Telephony Problems 星号食谱:解决日常电话问题
海外直订The Principles of Electric Wave Telegraphy and Telephony 电波电报和电话原理“,
海外直订Wi-Fi Telephony: Challenges and Solutions for Voice Over Wlans Wi-Fi电话:无线语音的挑战与解决方案
海外直订Networks: Internet - Telephony - Multimedia :互联网-电话-多媒体
【预售】IP Telephony Interconnection Reference: Challenges
【预售】Digital Telephony Third Edition
海外直订Digital Telephony 数字电话
【预售 按需印刷】Wireless Telephony
【4周达】FreePBX 2.5 Powerful Telephony Solutions [9781847194725]
【全新正版】 ndroid Telephony原理解析与开发指南 9787115489159
【4周达】Design and Cryptanalysis of ZUC : A Stream Cipher in Mobile Telephony [9789813348813]
【4周达】Microsoft Lync 2013 Unified Communications: From Telephony to Real-Time Communication in the... [9781849685061]
【4周达】A Village Goes Mobile: Telephony, Mediation, and Social Change in Rural India [9780190630287]
【4周达】Enterprise Networks and Telephony : From Technology to Business Strategy [9781447115663]
预订 Building Enterprise Ready Telephony Systems with sipXecs 4.0 [9781847196804]
预订 Building Telephony Systems with OpenSER: A Step-by-Step Guide to Building a High-Performance Tel... [9781847193735]
【4周达】Building Telephony Systems with OpenSIPS - Second Edition [9781785280610]
【4周达】Mobile Telephony Dangerous for both Adult and Children [9783659205422]
【4周达】Wireless Telegraphy and Telephony: An Outline for Electrical Engineers and Others [9781107629561]
【4周达】Asterisk: The Definitive Guide: Open Source Telephony for the Enterprise [9781492031604]
【4周达】PSTN-IP Telephony Gateway for Ensuring QoS in Heterogeneous Networks [9783659178825]
【4周达】Handbook of SDP for Multimedia Session Negotiations: SIP and WebRTC IP Telephony [9780367571757]
【4周达】Asterisk Cookbook: Solutions to Everyday Telephony Problems [9781449303822]
【4周达】'Glocalization' of Mobile Telephony in West and Central Africa: Consumer Appropriation and C... [9789956550395]
【4周达】IP Telephony Over IUG Network [9783844394634]
【4周达】Voip Hacks: Tips & Tools for Internet Telephony [9780596101336]
预订 Handbook on Session Initiation Protocol: Networked Multimedia Communications for IP Telephony [9780367574987]
【4周达】Telephony, the Internet, and the Media : Selected Papers From the 1997 Telecommunications Po... [9780805831528]
【4周达】Voip And Unified Communications: Internet Telephony And The Future Voice Network [Wiley电子... [9781118019214]
【4周达】Pbx Systems for IP Telephony, Migrating Enterprise Communications [9780071375689]
【4周达】Computer Telephony Encyclopedia [9781578200450]
【4周达】Secure Serial Port Communications and Telephony Dialing Systems [9786202055871]
Ip Telephony - Deploying Voip Protocols And Ims Infrastructure 2E [Wiley电子电气工程] [9780470665848]
【4周达】Wi-Fi Telephony: Challenges and Solutions for Voice over WLANs [9780750679718]
【4周达】Cisco Avvid and IP Telephony Design and Implementation [9781928994831]
【4周达】Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks [9783319378756]
【4周达】Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks [9783319021010]
按需印刷Wireless Telegraphy And Telephony (1906)[9781437365504]
按需印刷Telephony Without Wires[9780548506820]
【4周达】Mobile Video Telephony: For 3g Wireless Networks [9780071445689]
【4周达】Ims Multimedia Telephony Over Cellular Systems - Voip Evolution In A Converged Telecommunica... [9780470058558]
【4周达】Converged Communications - Evolution from Telephony to 5G Mobile Internet [9781119867500]
【4周达】A Village Goes Mobile: Telephony, Mediation, and Social Change in Rural India [9780190630270]