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With the rise and development of information services and applications, the data traffic on IP networks is growing rapidly. Data Services must follow certain protocols. Currently, H323, SIP, and MGCP are mostly used. These protocols have their own characteristics and have been promoted to a certain extent. This article explores how to interwork between SIP and MGCP. Logical Structure Figu
MGCP/H.248 Authentication MGCP/H.248 Authentication Authentication overview and Basic Algorithms MGCP/H.248 authentication Overview The MGCP protocol does not involve Security Authentication standards. It is not a security risk for network application end users or operators.To solve this problem, the national standards
Just ate a bowl of authentic Chaozhou beef tendon pills and a braised egg, is to give their own birthday gift.This week's work revolves around only one theme, "MGCP's ALG function implementation."1. Application Scenario:A terminal device running MGCP Voice protocol, through a router to reach the public network, registered to the MGCP server;2. Question:Through the router's
the endpoint to be online or offline. It can contain the wildcard "*" for "all", but cannot contain the wildcard "$" for "any ".Restartmethod: restart solution. There are three methods to restart these endpoints:Graceful: This scheme indicates that these endpoints will be offline after the specified delay.Forced: This scheme indicates that these endpoints will be offline immediately and established connections will be lost.Restart: This scheme indicates that the services of these endpoints will
MGCP normal call Process Event 1: MGC sends the rqnt command to the gateway to monitor the terminal.Gateway validation command. Use the same transaction as the rqnt command during confirmation Code . The Gateway monitors this event until the user is disconnected.Event 2: After the user disconnects the host, the gateway sends the ntfy command to MGC, which contains the message about the host extraction event at the monitored endpoint.MGC should confir
time. You can run the fixup protocol h323 command to check the port traffic. By default, the port 1720 connection is used in the PIX Firewall to check the h.323 traffic. Therefore, the port parameters are not required in the command. However, sometimes the default port is changed to further improve its security. After the change, attackers cannot use port scanning or other methods to determine whether a company uses a VoIP application. After the port is changed, the security settings still need
, mobile phones, GPRS terminals, SIP terminals, H.248 terminals, MGCP terminals, Ethernet telephones through PCs, and cable modems. NGN is a new type of target network that integrates multiple services. Its outstanding advantages are guaranteed by a series of key technologies, it is bound to involve a considerable number of traditional technologies and new protocols, such as Softswitch, digital processing, digital transmission, routing, and IP-based c
The usage of softswitch protocol is described in four special protocols. Next we will give a brief introduction to several main Softswitch protocols, such as H.248/MEGACO, Media Gateway Control Protocol MGCP), and Session Initiation Protocol SIP. Main protocols used by Softswitch The softswitch system involves many Softswitch protocols, including H.248, SCTP, ISUP, TUP, INAP, H.323, RADIUS, SNMP, SIP, M3UA, MGCP
device system concept or a system concept. China's telecom industry has always translated switch as switch, while switching as "switch ". So why are we making an exception here? Even more troublesome, it is difficult to identify the differences between "softswitching" and "softswitch" in Chinese. Therefore, the author believes that for the seriousness of academic research, we should translate Softswitch into soft switch more accurately. In the formal written language, "Softswitch" should be avo
-network Softswitch environment, the intercommunication between SIP and BICC/ISUP, And the intercommunication between mobile protocol ppsip and BICC/ISUP. It is particularly important that the SIP-I protocol family has the ITU-T standard inherent clear accurate and detailed specific, operability is very strong. In addition, 3GPP has adopted Q.1912.5 as the final standard for intercommunication between IMS and PSTN/PLMN. Therefore, the intercommunication between Softswitch SIP domain and PSTN sho
The VoIP network protocol is the basis of the network telephone. It has been widely used in network communication. The use of this Protocol forms this business and challenges the traditional communication market to the maximum extent, and traditional communication methods. Let's take a look at this powerful VoIP. VoIP network protocol Currently, VoIP protocols are commonly used, such as H.323, SIP, MEGACO, and MGCP ｡ H.323 is a ITU-T standard original
-T and BICC are widely used in fixed network, and SIP-I is the future development direction; MGCP is mature in controlling the softswitch protocol between SoftSwitch and media gateway, but H.248 inherits all the advantages of MGCP and has a tendency to replace MGCP; MGCP is mature in terms of control protocols between
differences between "softswitching" and "softswitch" in Chinese. Therefore, the author believes that for the seriousness of academic research, we should translate Softswitch into soft switch more accurately. In the formal written language, "Softswitch" should be avoided as a short name for soft switches.There have been a lot of discussions about vswitches, and people have basically agreed on the technical characteristics of vswitches. Vswitches use MGCP
Next we will introduce the VoIP protocol. We all know that VoIP is one of the most popular network businesses. The Application Basis of this Service is also a VoIP protocol. We will introduce this protocol in detail. VoIP protocol Currently, VoIP protocols are commonly used, such as H.323, SIP, MEGACO, and MGCP ｡ H.323 is a ITU-T standard originally used for multimedia conferencing on a LAN and later extended to over VoIP ｡ This standard includes both
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 originally used for multimedia conferencing on a LAN and later extended to over VoIP ｡ This standard includes both point-to-point communica
control technology in the next generation network. It is generally divided into narrowband SoftSwitch and broadband SoftSwitch. Narrowband Softswitch is mainly used for narrowband voice services, and broadband Softswitch is mainly used for broadband multimedia services. In fixed networks, narrowband Softswitch technology means that a soft switch uses H.248 or MGCP protocol to control various gateways, including the relay Gateway TGTrunk Gateway) and
translate Softswitch into "Softswitch ". The term "Softswitch" is not clear enough to give it a logical illusion. It is literally difficult for people to understand whether it is a device system concept or a system concept. China's telecom industry has always translated switch as switch, while switching as "switch ". So why are we making an exception here? What's even more troublesome is that it is difficult for Chinese to distinguish between "softswitching" and "softswitch. Therefore, I believ
The VoIP network protocol is the support for VoIP services. In network communication, the use of this Protocol forms this business, and it is challenging the traditional communication market and traditional communication methods to the maximum extent. Let's take a look at this powerful VoIP. VoIP network protocol Currently, VoIP protocols are commonly used, such as H.323, SIP, MEGACO, and MGCP ｡ H.323 is a ITU-T standard originally used for multimedia
industry has always translated switch as switch, while switching as "switch ". So why are we making an exception here? Even more troublesome, it is difficult to identify the differences between "softswitching" and "softswitch" in Chinese. Therefore, the author believes that for the seriousness of academic research, we should translate Softswitch into soft switch more accurately. In the formal written language, "Softswitch" should be avoided as a short name for soft switches. There have been a l
assignment), and support video phone.Gradually becoming mainstream in the marketAt present, there are three main technical standards used by VoIP: H.323 and related protocols, MGCP protocol and SIP protocol.The H.323 protocol is a proposal proposed by the ITU-T for multimedia conferencing systems, not specifically for VoIP, is a complex protocol, upgrade and scalability is not very good. MGCP and Megaco/H.
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