Đồ án Voice over IP Security
đồ án nghiên cứu voice over ip
... Sip:username@domain:port Sip:username@host:port Sip:alice@ericsson.com Sip:01239084600@ericsson.com Sip:alice@ericsson.com Sip:alice@192.168.200.2 2.2.3 Thông điệp SIP Tìm hiểu công nghệ VOIP ... VOIP SVTH: Phạm Huy Chiến ĐẠI HỌC GIAO THÔNG VẬN TẢI TP HCM GVHD: Th.s Lại Nguyễn Duy Để giải vấn đề người ta đưa công nghệ VOIP (voice over IP) Trong mạng PSTN sử dụng chuyển mạch kênh VOIP ......
Ngày tải lên: 20/06/2014, 22:49
Thoại trên mạng VOI IP (voice over IP - VOIP)
... gọi điện thoại (cả truyền thoại lẫn báo hiệu) cho mạng IP kết nối chúng với mạng điện thoại công cộng nh mạng thoại cá nhân để trì chuẩn thoại thời nh đặc tính mà ngời mong đợi máy điện thoại Thách ... ứng dụng thoại Phần lớn ứng dụng VoIP hoạt động thời gian thực Tuy nhiên, dịch vụ thoại lu rồỉ truyền đợc thi hành cách sử dụng VoIP Chẳng hạn, thông điệp thoại đợc ch...
Ngày tải lên: 31/08/2012, 10:00
Implementing Voice Over IP
... PREFACE In general, voice transmission over the Internet protocol (IP) , or VoIP, means transmission of real-time voice signals and associated call control information over an IP- based (public or ... VoIP Figure 2-9 Protocol layers for MGCP and Megaco/H.248-based real-time voice services using IP or the integrated access device (IAD), it is possible to use either voice over...
Ngày tải lên: 15/09/2012, 10:04
Tìm hiểu VOICE OVER IP
... [VOICE OVER IP] CHƯƠNG I: TỔNG QUAN VỀ VOIP Giới thiệu chung VoIP Voice over Internet Protocol (VoIP) công nghệ cho phép truyền thoại sử dụng giao thức mạng IP, sở hạ tầng sẵn ... nguồn • IP phone : điện thoại dùng riêng cho mạng VoIP Các IP phone không cần VoIP Adapter chúng tích hợp sẵn bên để kết nối trực tiếpvới VoIP server Các định nghĩa liên quan đến VOIP • VoIP – Voice ....
Ngày tải lên: 09/10/2012, 16:40
Overview of the PSTN and Comparisons to voice over IP
... from the SS7 network and tell the MGs when to set up IP connections and with which other MGs they should set them up The MG on the right side of Figure 1-14 does not have a connection to the SS7 ... transport and IP rides across the top IP is so attractive as the packet infrastructure because of its ubiquitous nature and the fact that it is the de facto...
Ngày tải lên: 30/09/2013, 05:20
Voice over IP Applications and Services
... target ipv4:192.168.102.2 ! dial-peer voice voip description "calls to Denver office" destination-pattern 5… session target ipv4:192.168.103.2 ! dial-peer voice voip description "calls to IP Phones ... key-systems with Cisco IP phones and to reduce lease costs when the key-system leases expired Capability to integrate both Cisco IP phones and existing voice equipment with mult...
Ngày tải lên: 30/09/2013, 05:20
Voice over IP Benefits and Applications
... Typical Enterprise Voice and Data Network 106 The voice network uses multiplexers to connect voice and data networks across one T1 circuit When voice is not being used, however, the voice network ... to download voice mail and respond electronically, and to forward voice mail to a group Such technology exists today and will soon be available and widely used through e...
Ngày tải lên: 30/09/2013, 05:20
Voice over IP Configuration Issues
... groups—Enable the voice gateway to hunt through dial-peers to ensure delivery of a phone call to a valid IP gateway Call failover—Enables an IP call to be routed to a different location if the first IP destination ... VoIP network, it did cover the basics of Cisco IOS configuration for VoIP It also explained the various components a network administrator must consider before designi...
Ngày tải lên: 30/09/2013, 05:20
Cisco Press 2000 - Voice over IP Fundamentals - Voice over IP Fundamentals
... Services Summary II: Voice over IP Technology Voice over IP Benefits and Applications Key Benefits of VoIP Packet Telephony Call Centers Service Provider Calling-Card Case Study Value-Added Services ... Packet Telephony Packet Voice Network Overview VSC Architecture and Operations VSC Implementation Summary IV: Voice over IP Applied 14 Voice over IP Configuration Iss...
Ngày tải lên: 30/09/2013, 05:20
Implementing Voice Over IP - Preface
... information, and VoIP is no exception The problems become more challenging when one attempts to deliver real-time services over a routed packet-based network Chapter discusses the VoIP signaling and ... developed VoIP testbed are considered in Chapter This testbed has been used both to prototype and develop operational engineering rules to deliver high-quality VoIP service over an IP ne...
Ngày tải lên: 30/09/2013, 07:20
9E0-431 (CVOICE) Cisco Voice Over IP Version 3.0
... specify the IP address of a SIP proxy server? A sip-ua sip-server ipv4:1.2.3.4 B sip-ua sip-server target:1.2.3.4 C dial-peer voice voip session target sip:1.2.3.4 D dial-peer voice voip session ... calls to 2? A interface serial 3/2 ip rsvp bandwidth B dial-peer voice 1000 voip max-conn C dial-peer voice 1000 voip max-concurrent D dial-peer voice 1000 voip ip rsvp neighbor Le...
Ngày tải lên: 18/10/2013, 18:15
Voice over IP/Frame Relay Lab Scenarios
... that Voice over IP is not as efficient as Voice over a Layer protocol, so you decide to take advantage of your already existing Frame -Relay network to transport voice Figure Voice Over Frame -Relay ... accepts voice data from outside sources Voice ports can be configured to take advantage of Voice Activated Detection (VAD) voice- port 1/0/0 vad ! voice- port 1/0/1 vad...
Ngày tải lên: 19/10/2013, 02:15
Configuring Voice over IP for the Cisco 3600 Series
... existing IP network, you are ready to configure your network devices to support Voice over IP Configuring Voice over IP for the Cisco 3600 Series VC-15 Voice over IP Configuration Task List Voice over ... of the PC running NetMeeting CODEC—g711ulaw or g711alaw Configuring Voice over IP for the Cisco 3600 Series VC-37 Voice over IP C...
Ngày tải lên: 22/10/2013, 09:15