pstn conferencing

processing business of the whole network, and is responsible for providing various network resources and network services to network users.2) Communication sub-network consists of communication control processor, communication line and other communication equipment, complete network data transmission, forwarding and other communications processing business. The communication control processor is called the network node in the network topology structure.The user's computer can be connected via L

, the user can first go through the softswitch network, arrive at the receiving end, and then enter the target network. Generally, the inbound network is used. When a Softswitch user is called, if it is a user from another network, it should be directly connected to the softswitch network in theory. However, to determine whether the user is a Softswitch user, you need to determine 6 ~ 7-digit number. If the IP address is a Softswitch IP address, it is sent to the peer softswitch network through

development point of view, SIP/SIP-T is the trend. The advantage of this networking mode is that the network is simple and the requirements for Softswitch devices are not high. When the network size is small, it is a good choice. When the network size is large, this will bring about huge maintenance work. 2. Hierarchical networking structure of softswitch Devices The lower-level Softswitch is interconnected with the upper-layer Softswitch, and the routing information between the softswitch is

There are some problems with the H.323 Protocol (only a limited MCU is not supported for multicast; its IP telephone network still needs to go through the Local PSTN Circuit Switching Network at the access end), and then MGCP is customized, the purpose is to break down H.323 functions into two parts: Media Gateway (MG) responsible for media processing, and the Media Gateway controller (MGC) that controls call establishment and control. Four elements

meta devices read the server correctly, pass readings to one or more customers, and adjust each customer's time as needed. These protocols include: Network Time Protocol (NTP), Digital time synchronization Protocol (DTSS), and so on. Three, UTC time Transmission mode The time information that transmits UTC, usually has the wireless transmission way (high-frequency or low-frequency radio signal), the Wired Transmission Way (DCN, PSTN, DDN and so on)

exchange of the C5/C4 switch control part and the relay gateway which exchanges with other networks. Other business Application layer network element equipment such as fixed network SCP directly inherit PSTN. The difference of the soft switch equipment. The difference of softswitch between WCDMAR4 and NGN is mainly embodied in the aspect of business feature set and interactive protocol. WCDMAR4 's Mscserver inherits the business processing and signa

with enterprise applications; the third is to provide unified management for users, such as unified business order service and unified bill service.To this end, we can use open business interface technology, centralized storage and management of user data, and unified operation support system technology. Based on the softswitch business system, we will gradually carry out research on multi-network integrated business systems. Considering that the architecture of the fixed mobile converged netwo

billing and number placement, it will obviously affect the use of the traditional network, this bypasses the business volume of traditional networks. Therefore, multiple factors must be taken into account to determine the numbers of softswitch terminals. When a Softswitch technical user is called, if it is a user call from another network, it should theoretically be directly connected to the softswitch network. However, to determine whether the user is a Softswitch technical user, you need to d

of the PSTN (Public switched telephone system) to the Internet and the transmission of the PSTN's voice data over the Internet. VoIP Network Telephone (also known as IP phone or VoIP) is based on the IP technology of packet, digital transmission technology, the basic principle is: Through the speech compression algorithm to the voice data compression encoding processing, and then these voice data by IP and other related protocols to package, after IP

, including call routing, management control, Connection Control, and signaling intercommunication (such as from n o. 7 to I P signaling. It provides call control, resource allocation, protocol processing, routing, authentication, billing, and other functions. It also provides users with all the services available for existing circuit switches, it also provides third-party programmable capabilities. 2. Main Features of Softswitch Technology 1. Openness. Softswitch uses open standard interfaces t

addition, because VoIP effectively leverages the infrastructure of the Internet and the global IP environment, it can be used for such things as unified messaging, virtual telephony, virtual voice/Fax mailboxes, number search services, Internet call centers, Internet call management, videoconferencing, e-commerce, Information Store forwarding and other emerging data services to provide strong support. VoIP phone as a new business, has its own characteristics and traditional business can not

With the popularization of VoIP technology, the security of VoIP voice communication has aroused more and more widespread concern in the industry. But where the security threats of VoIP originate, this should be the first step in the industry to systematically address VoIP security issues. In October of this year, VOIPSA (Voice over IP Security Alliance) VoIP Safety Alliance released a classification of VoIP security threats, a more detailed classification and description of the security threat

Summary The current virtual dial-up private network (vpdn,virtual private dial-up Network) is mainly the use of Pstn/isdn-hosted VPDN. Based on the analysis and research of GPRS working principle and VPDN working principle, this paper gives the VPDN business call realization process based on GPRS, and the flow and realization of GPRS VPDN and roaming business management. 1 Preface From the development direction of mobile communication, mobile data

Cloud is everywhere, or IT public opinion tries to create such a concept. To be fair, IT directors are increasingly concerned with the development of unified cloud communication (UC) and collaborative strategies. Although they want to reduce spending, improve flexibility, and implement new services through the cloud UC application, they are also worried about the maturity of cloud services, enterprise support and security issues, especially in the branch environment. As the number of branches in

Speaking of the Unified Communication Platform, the first advantage is low cost. Imagine that the company doesn't want to use low prices to achieve high-end informatization work? Therefore, the Unified Communication Platform also has a sound development momentum. In addition, video conferencing is also very attractive for many enterprises that have expanded overseas or are far away from each other. Global Crossing, which is engaged in IP network const

is similar to a plug-and-play device deployed locally on a set-top box. It is used to manage SIP devices, such as desktop IP phones, and also for distribution. The most important thing is that it can also be used as a smart point to solve problems generated by local devices. Therefore, the hybrid cloud solution is expected to achieve breakthrough development starting from 2013. For example, the Simba hybrid cloud solution launched by Beijing Century aotong Technology Co., Ltd. can be further de

Series article Navigation FLEX,FMS3 related articles Index Flex and Fms3 Create online chat rooms (with Netconnection objects and Sharedobject objects) FMS3 and Flex create online video recording and playback FMS3 and Flex create online multiplayer video conferencing and video chats (with original code) Summary of interaction between client side and server side in FMS3 Free Beauty video chat, multi-person video

1. What is media? media is the carrier of information representation and transmission. 2. media category: Sensory media, indicating media, performance media, storage media, and transmission media 3. definition and features of Multimedia Technology: multimedia technology is a computer interactive integrated sound processing, text, and graphic information technology, with integration, real-time and interactive. 4. multimedia standards: Microsoft proposed international digital image compression sta

follow the information given below, perform necessary tests and analysis. After completing these steps, I will be aware of the basic network conditions.I. bandwidth usage What are the network bandwidth requirements of voice, video, whiteboard, remote desktop, and other functions in a voice/video chat system or video conferencing system developed based on the OMCS voice/video framework? Let's assume a common scenario: Assume that N online users perfor

guarantee service quality and service quality is provided by RTCP. Application environment of 1.2. RTP RTP is used to transmit real-time data in a unicast or multicast network. They are typically used in a number of situations. (1) Simple multicast audio conferencing. Voice communication is implemented through a multicast address and a pair of ports. One for audio data (RTP) and another for control packs (RTCP). (2) Audio and video