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Contents
Quality ... computer and
ensure quality of service for both the IP phone and the downstream computer.
Cisco
IP Phones
Access Layer
Layer 3 Core
Server Farm
Distribution
Layer
Cisco
CallManagers
IP
IP
IP
IP
IP
IP
40776
...
... top of networks that were built to carry voice efficiently. Data has different
characteristics, however, such as a variable use of bandwidth and a need for higher bandwidth.
Soon, voice networks ... SS7 and are made
by Service Control Points (SCPs). Chapter 8, "VoIP: An In-Depth Analysis,"
discusses how the different
VoIP protocols work andhow they solve different networkdesign ... 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,...
...
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 ... companies, it standardizes on Cisco routers and switches and removes any
protocols other than IP, IPX, and SNA.
In the future, B.A.N.C. hopes to transition its IPX servers to TCP /IP so that it ... by consolidating equipment and
data /voice networks.
ã Cisco's IP phone provides the look and feel of a traditional handset, with the added functionality of IP
connectivity. Instead of...
... II: VoiceoverIP Technology
Chapter 6 VoiceoverIP Benefits and Applications
Chapter 7
IP Tutorial
Chapter 8
VoIP: An In-Depth Analysis
Chapter 9
Quality of Service
Chapter 6. Voiceover ... Typical Enterprise Voiceand Data Network
106
Figure 6-15. Integrated Voiceand Data Network
The networkdesign shown in Figure 6-15
is just one step in the path toward voiceand data integration. ... [SS7] network) and ICW.
Figure 6-11. ICW Call-Flow
104
The voicenetwork uses multiplexers to connect voiceand data networks across one T1 circuit. When voice is
not being used, however,...
... protocols and standards
●
References
●
List of Acronyms
●
INTRODUCTION
Voice overIP (VOIP) uses the Internet Protocol (IP) to transmit voice as packets over an IP network. So VOIP can be
achieved ... hardware standards for internet telephony.
See Also: VoiceoverIP - Products, Services and Issues | VoiceoverIP (Lecture by Dr Jain) | Voiceover ATM | H.323
and Associated Protocols | VOIP References ... data network that uses IP, like Internet, Intranets and Local Area Networks (LAN). Here the voice signal
is digitized, compressed and converted to IP packets and then transmitted over the IP network. ...
... 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 ... luận
Mạng 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...
... understand how all the various VoIP components set up calls, tear down calls, and offer services.
Chapter 14, " ;Voice overIP Configuration Issues,"
and Chapter 15, " ;Voice overIP ...
Chapter 1, "Overview of the PSTN and Comparisons to Voiceover IP, " contrasts the similarities and
differences between traditional TDM networks and networks running packetized voice.
Chapter ... of howvoice is transported overIP networks
ã Cover the various caveats of converging voiceand data networks
ã Provide detailed reference information on various Public Switched Telephone Network...
... 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, 77
Web-Based Call and Contact Centers, ... 63
IP Networkand Emulation of Network Impairments, 64
SS7 Network Emulation and Connectivity, 65
Network Time Server, 65
Telephone Call Emulation Suites, 65
Epilogue, 67
References, 67
6 VoIP ... 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, 55
Management of Voice Quality...
... 16
[VOICE OVER IP]
CH NG I: T NG QUAN V VOIPƯƠ Ổ Ề
1. 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, ... có m t m ng nh sau: ộ ạ ư
Page 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 ... nói (Voice Compression)ọ
Page 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...
... no single entity controls the voiceand data network, however, it is possible in single- and two-stage dialing to
have multiple compression cycles, which affectvoice quality. You must take great ... 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 designing and deploying a VoIP ...
transparently transport and tunnel features across multiple networks, SS7 must be supported as the
mandatory baseline interface.
This command is configured on the VoIP dial-peer (which is...