For now, the cost of long-distance calls is still very high. In the VoIP service, the most attractive is its low cost. Next we will introduce the VoIP protocol. We hope you can understand it.
VoIP protocol
Currently, VoIP protocols are commonly used, such as H.323, SIP, MEGACO, and MGCP 。
H.323 is a ITU-T standard orig
VoIP is a transmission technology that uses a router-Based IP group switching network to implement voice communication. The biggest advantage of VoIP technology is that IP Phones only require 8 kbit/s to use advanced voice encoding technology ~ The bandwidth of 12 kbit/s can be transmitted much less than the 64 kbit/s of the traditional circuit switching network. Wireless
VoIP bookmarks from Klaus darilion
Below you will find descriptions and links to sip and RTP stacks, applications, test utilities, SIP proxies, SIP pbxs and stun server and clients. most of them are open source :-), but not all of them
If you have any comments please feel free to contact me: --> Klaus. darilion at pernau. at
There are also other VoIP related portals and link collections.
Note: I mainly sea
Readers who have a long memory and a history of online trading may also vaguely recall that the creator of the famous PGP (Pretty Good Privacy) software, security expert Phil Zimmermann, launched a "Pgpfone" in 1996. of Internet telephony products. About three years later, broadband networks really started to grow. This is the early stage of the network telephony development cycle. Pgpfone a little too far ahead, not to arouse people's attention. But the world must be careful! Security expert Ph
QoS can give priority to voice communication services under limited network resources. However, if too many voice communications occur, the network may be congested. How can this problem be solved?
Call Control for enterprise VoIP networks
When we configure the QoS function that supports voice on an enterprise's IP network router and switch, this IP network is ready to carry the voice application. However, in order to achieve the call, we also need to
In traditional speech, we all communicate in Wired form. The first time was a analog signal, followed by a digital signal. Now, our voice communication methods can be implemented through network IP addresses. This leads to today's topic-VoIP and VoWLAN.
VoWLAN Overview
VoWLAN is one of the emerging applications of WLAN. VoIP transmits voice signals through a data network; WLAN), and uses wireless access poi
QoS can give priority to voice communication services under limited network resources. However, if too many voice communications occur, the network may be congested. How can this problem be solved?Call Control for enterprise VoIP networksWhen we configure the QoS function that supports voice on an enterprise's IP network router and switch, this IP network is ready to carry the voice application. However, in order to achieve the call, we also need to e
the Internet can make full use of the network and increase the chance for students to communicate and communicate with the outside world, the cost of communication between students and schools is reduced. However, this communication method requires less investment in the early stage, which is convenient to use and must meet the personalized communication characteristics of students, another important selling point is long calls and low costs.
II. Introduction to
Application VoIP service quality (QoS) has four key steps: Application VoIP service quality (QoS) has four key steps. If you do not follow these four steps, your VoIP implementation will not realize its full potential. In addition to enabling the vro function, QoS has many things to do. Therefore, it takes some time for you to plan and design the correct QoS for
I. Overview
As we all know, a company's business activities depend heavily on modern communication methods. Exchange of telephone, fax, data, and information is the fundamental guarantee for the survival and development of enterprises. At the same time, the extensive use of these devices has brought a burden to enterprises and increased their operating costs. In particular, large international groups and large enterprises have paid a lot of money for this.
In recent years, with the continuous de
Document directory
RTP Stacks (mainly open source C/C ++ stacks)
SIP Stacks
RTP Applications
SIP Phones (SIP User Agents)
SIP Test Utility
SIP Applications (Proxy, Location Server)
Sip Express Router (ser)
Ser Media Server (sems)
STUN server and clients
NAT traversal ALG (application level gateway)
Below you will find descriptions and links to SIP and RTP stacks, applications, test utilities, SIP proxies, SIP PBXs and STUN server and clients. most of them are open source :-), but n
When you look at a VoIP solution, one of the most difficult problems to solve is the labor cost problem. The difficulty of this issue may be second only to the quantification of the impact on user productivity. This is partly because the vendor promises that such integration will reduce staffing while doing marketing, so that your mind will have the impression of reducing staff. However, integration and technical support are new technologies. This tec
I. architecture of the billing systemThe design of the VoIP Billing system follows the design principle of real-time Internet billing, and features real-time, stability, reliability, portability, and scalability. The function design not only takes into account the basic functions of the Internet billing system, it also considers users' needs and the business characteristics of the VoIP system.The core part
above practices and other power-saving strategies, the ROCm chip can improve the power consumption efficiency of WLAN operations, which is up to six times better than the traditional WLAN Chip, thus improving the battery life. A new generation of 802.11 devices that can implement various VoIP applications now include such chips.
Import voice to WLAN
802.11 WLAN can use high-performance components to provide reliable overall performance. However, this
The combination of multimedia applications and traditional enterprise networks has become commonplace in enterprises. In particular, with the steady development of VoIP technology, IP voice has gradually become an indispensable new member in the enterprise network. However, this poses new challenges to enterprise network security. Recently, more and more attacks have been initiated against enterprise VoIP a
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Category: Linux applications-open-source VoIP-Based on Osip-qutecom Brief Description: reprinted, please keep the link
NOTE: If any error occurs, please correct it. These are my Learning Log articles ......
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Complex VOIP configuration 1. topology, center Zongbu # shrunBuildingconfiguration... Currentconfiguration: 2216 bytes! Version12.2servicetimestampsdebuguptimeservicetimestampsloguptimenoservicepassword-encryption! HostnameZongbu! En
Complex VOIP configuration 1. topology, center Zongbu # sh run Building configuration... Current configuration: 2216 bytes! Version 12.2 service timestamps debug uptime service
In Unified Communication, we can see many representative services, such as video communication and instant communication ...... Among them, VoIP is one of the "everyone". So why should we integrate VoIP into the field of Unified Communication and how should we integrate VoIP into the planning of enterprises?
Today's enterprise communication industry is a popular
Is the network only an infrastructure? Obviously, the current applications have prompted the network to shoulder greater responsibilities. There are still some standard problems to integrate IP speech into traditional networks. What will happen in the future?When is the call no longer a traditional call? VoIP answers this question.All kinds of signals were transmitted through copper wires before January 1, 100. Later, radio broadcast and television si
Application Guide: clarifies the concepts of managed and hosted VoIP
Managed, centralized user switch, and hosted VoIP. Oh, my God! There are many available products for enterprises looking for alternative products for the indoor telephone system. This product has various types and sizes. Hosted speech, IP centralized user switches, managed ip pbx, and network-based voice services are all alternative produc
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