0

voice and video over ip pdf

Overview of the PSTN and Comparisons to voice over IP

Overview of the PSTN and Comparisons to voice over IP

Kỹ thuật lập trình

... which it and other voice networks are evolving to the point at which they combine data, video, and voice. The Beginning of the PSTN The first voice transmission, sent by Alexander Graham Bell, ... Protocol (UDP) /IP header to provide timestamping . RTP runs atop UDP and IP and is commonly noted as RTP/UDP /IP. RTP is currently the cornerstone for carrying real-time traffic across IP networks. ... covers how they are maintained and deployed. ã In late 1998, the IETF put IPDC and SGCP in a room and out popped MGCP. MGCP is basically SGCP with a few additions for OAM&P. MGCP is covered...
  • 23
  • 483
  • 0
Voice over IP Applications and Services

Voice over IP Applications and Services

Kỹ thuật lập trình

... session target ipv4:192.168.102.2 ! dial-peer voice 2 voip description "calls to Denver office" destination-pattern 5…. ! dial-peer voice 3 voip description "calls to IP Phones ... matched against a VoIP dial-peer to complete the call. ! session target ipv4:192.168.103.2 ! voice- port 1/0:3 connection trunk 999 ! dial-peer voice 1 voip description "trunk/opx ... interface FastEthernet 1/0/0 ip address 192.168.100.1 255.255.255.0 ipx network 100 ! interface FastEthernet 1/0/1 225 Chapter 15. Voice over IP Applications and Services As enterprise...
  • 20
  • 428
  • 0
Voice over IP Benefits and Applications

Voice over IP Benefits and Applications

Kỹ thuật lập trình

... II: Voice over IP Technology Chapter 6 Voice over IP Benefits and Applications Chapter 7 IP Tutorial Chapter 8 VoIP: An In-Depth Analysis Chapter 9 Quality of Service Chapter 6. Voice over ... network) and ICW. Figure 6-11. ICW Call-Flow 104 The voice network uses multiplexers to connect voice and data networks across one T1 circuit. When voice is not being used, however, the voice ... voice network. The following issues and applications are addressed: ã Benefits of Voice over IP (VoIP), including cost savings, single infrastructure savings, and new applications ã Using a packet...
  • 15
  • 436
  • 0
Voice over IP : Protocols and Standards

Voice over IP : Protocols and Standards

Tin học văn phòng

... hardware standards for internet telephony.See Also: Voice over IP - Products, Services and Issues | Voice over IP (Lecture by Dr Jain) | Voice over ATM | H.323 and Associated Protocols | VOIP References ... protocols and standards● References● List of Acronyms● INTRODUCTION Voice over IP (VOIP) uses the Internet Protocol (IP) to transmit voice as packets over an IP network. So VOIP can beachieved ... Provides call signaling and registrationH.245 Negotiates the usage of the media channelsSIP IETF standard for providing voice over IP Voice Over IP : Protocols and Standardshttp://www.cis.ohio-state.edu/~jain/cis788-99/voip_protocols/index.html...
  • 20
  • 373
  • 0
Tài liệu Voice over IP Open-Source Platforms and the Session Initiation Protocol doc

Tài liệu Voice over IP Open-Source Platforms and the Session Initiation Protocol doc

Kỹ thuật lập trình

... courses and enhanced, hands-on labs and exercises offer practical skills and tips that you can immediatelyput to use. Our expert instructors draw upon their experiences to help you understand key ... nodesVoIP (Voice over Internet Protocol): routing of voice conversations over the Internet or through anyother IP- based network; also called telephone, broadband phoneVolatile memory: chips that lose ... collection of IP networks under the control of a single entityB (bearer) channel: carries voice, video, image, or data traffic, depending upon the equipment and applica-tions available Bandwidth:...
  • 21
  • 469
  • 0
Thoại trên mạng VOI IP (voice over IP - VOIP)

Thoại trên mạng VOI IP (voice over IP - VOIP)

Quản trị mạng

... đó cho phép thoại và fax đợc truyền qua các mạng IP. Thực tế, các ứng dụng qua mạng IP nh video và multimedia cũng không còn xa nữa. cho VoIP, các lợi ích trong thời gian dài hơn đợc mong đợi ... trên cơ sở SNMP có thể đợc cung cấp cho cả dịch vụ thoại và dữ liệu sử dơng VoIP. ViƯc sư dơng thèng nhÊt giao thøc IP cho tất cả các ứng dụng hứa hẹn giảm bớt phức tạp và tăng cờng tính mềm ... luậnMạng Internet cùng giao thức TCP /IP đà trở thành một động lực tốt thúc đẩy các công nghệ mới, và khả năng truyền thoại thời gian thực qua các mạng IP chỉ là một trong những ứng dụng mới...
  • 4
  • 1,804
  • 19
Cisco Press 2000 - Voice over IP Fundamentals

Cisco Press 2000 - Voice over IP Fundamentals

Kỹ thuật lập trình

... understand how all the various VoIP components set up calls, tear down calls, and offer services. Chapter 14, " ;Voice over IP Configuration Issues," and Chapter 15, " ;Voice over IP ... Chapter 1, "Overview of the PSTN and Comparisons to Voice over IP, " contrasts the similarities and differences between traditional TDM networks and networks running packetized voice. Chapter ... the voice realm. They also act as a good primer for those in specific voice areas that want to brush up on various other voice- networking protocols. Chapter 6, " ;Voice over IP Benefits and...
  • 239
  • 764
  • 3
Implementing Voice Over IP

Implementing Voice Over IP

Kỹ thuật lập trình

... in Enterprises 68 IP- Based Endpoints: Desktop and Conference Phones, 69 IP- PBX, IP Centrex, and IP- Based PBX Tie Lines, 71 IP- VPN and VoIP for Tele-Workers, 77Web-Based Call and Contact Centers, ... During a VoIP Session, 51 Voice Coding and Processing Delay, 52 Voice Envelop Delay, 53 Voice Packet Loss, 55 Voice Frame Unpacking and Packet Delay Jitter BuÔer, 55Management of Voice Quality ... VoIP 15 Voice Signal Processing, 15Low-Bit-Rate Voice Signal Encoding, 16 Voice Signal Framing and Packetization, 16Packet Voice Transmission, 18Mechanisms and Protocols, 18Packet Voice BuÔering...
  • 225
  • 541
  • 2
Tìm hiểu VOICE OVER IP

Tìm hiểu VOICE OVER IP

Quản trị mạng

... 16 [VOICE OVER IP] CH NG I: T NG QUAN V VOIPƯƠ Ổ Ề1. Gi i thi u chung v VoIP.ớ ệ ề Voice over Internet Protocol (VoIP) là m t công ngh cho phép truy n tho iộ ệ ề ạ s d ng giao th c m ng IP, ... nói (Voice Compression)ọPage 8 [VOICE OVER IP] 3.2 B giao th c ộ ứ SIP.SIP: (Session Initiation Protocol) đ c phát tri n b i IETF ( Internetượ ể ở Engineering Task Force) MMUSIC ( Multiparty ... có m t m ng nh sau: ộ ạ ưPage 7 [VOICE OVER IP] Ph ng th c ho t đ ng c a ươ ứ ạ ộ ủ SIP network :SIP là mô hình m ng s d ng ki u k t n i 3 h ng ( 3 way handshakeạ ử ụ ể ế ố ướ method) trên...
  • 20
  • 554
  • 7
Voice over IP Configuration Issues

Voice over IP Configuration Issues

Kỹ thuật lập trình

... considerations, such as single- and two-stage dialing, and their ramifications on voice dialing plans. This chapter also covered ways in which single- and two-stage dialing affect users, and it provided details ... no single entity controls the voice and data network, however, it is possible in single- and two-stage dialing to have multiple compression cycles, which affect voice quality. You must take great ... the voice gateway to hunt through dial-peers to ensure delivery of a phone call to a valid IP gateway. ã Call failoverEnables an IP call to be routed to a different location if the first IP...
  • 5
  • 335
  • 0

Xem thêm