The analog phone system or POT (Plain Old Telephone Service) is the service provided by the telecom company. The telecom company connects the phones with twisted pair wires. To increase the distance of signal transmission and management, there are also many communication network devices, such as PBX, VoIP gateway, and routers. Switching to a VoIP phone system has become a popular choice for many small and medium businesses due to better connectivity, expanded calling features and tools, and the possibility to make and receive local and international calls. Before VoIP,

Introduction: GPON, XG-PON, XGS-PON GPON is the access technology of passive optical network (PON) based on ITU-T G.984.x standard. It’s considered as the ideal solution to FTTx (especially FTTH) with its high bandwidth, great interoperability and manageability, high efficiency, etc, which gains more and more ISPs’ favor. However, with the flourishing of PON and demand for full services, people expect a higher performance of the bandwidth, service supporting capability, access network devices and so on while protecting the existing investment. Therefore, it comes to GPON’s evolution to the next generation, which is 10G

In the past, plenty of large and medium enterprises spent a lot on IDD call charges. Although they save the cost by using IP phone cards and other ways, it’s difficult to re-dial due to the complicated procedure and the high local call charging. Thus, VoIP Gateway is created to solve the high IDD call charges. This post will introduce what a VoIP gateway is. Part I. What is a VoIP Gateway? VoIP is a device that transfers call traffic into data packets and transmits them via the Internet. In

How many IP cameras can an Ethernet switch connect to? How many Gigabit switches can be connected to 2 million network cameras? Is it possible to use a 24-port 100M switch for 24 IP cameras? Let’s make an analysis on these problems! Part I. Choose according to the bitstream and quantity of the camera 1. Camera bitstream Before choosing a switch, the first thing you should do is to figure out how much bandwidth each image occupies. 2. Number of cameras Then, you should know the bandwidth capacity of the switch. Commonly used switches are 100M

1. Importance of Fiber Optic Network Security Network security has a growing impact on organizations with large data transfers. Digitalization, increasing family networks, and Cloud storage mean that network security should be attached to great importance. Without a secure network, financial and personal data can be vulnerable to malicious hacking and destruction. Departments of education, finance, government and health would be frequently targeted. Although many companies use encryption technologies to prevent data at rest from attack, the data is still easy to be intruded and intercepted in transferring. It’s said

PoE is called Power over Ethernet. A complete PoE system consists of PSE(Power Sourcing Equipment) and PD(Powered Device). In this article, we will introduce several connection methods of PoE Switch to show you how it connects to terminal devices such as IP cameras. 4 Methods of Connecting PoE Switch to IP Camera (Terminals) 1. Both switch and terminal devices support PoE. In this case, the PoE switch can connect to wireless AP and IP cameras via cable directly. This is the easiest way but you should also notice: ● Make sure the PoE

1. What is Access Layer Switch? As the bottom layer of the hierarchical internetworking model, the access layer is also known as the desktop layer. It connects end-users or end nodes to the network, such as PCs, printers, and wireless access points. The access layer is supposed to make it easier for end devices to stay connected to the network no matter where they are. Meanwhile, the upper layer connections must be considered in the design of the access layer. As the first layer and the network’s first line of

As the network scale expands and the network complexity increases, the configuration becomes more complex. In addition, the number of computers and mobile devices(such as mobile laptops or wireless terminals) increases sharply, causing frequent IP address changes and insufficient IP resources. The Dynamic Host Configuration Protocol(DHCP) is used to dynamically allocate IP addresses to hosts. Part I. What is DHCP? The Dynamic Host Configuration Protocol(DHCP) is a protocol that dynamically provides configuration parameters for Internet terminals. When a terminal submits an application, the DHCP server can provide the terminal with

VLAN is a technology used to implement virtual workgroups and limit broadcast domains. It is widely used on Layer 2 switching networks. VSOL PON access devices work at the second layer of the TCP/IP model. They achieve the access and isolation of a large number of users and the access, isolation, and forwarding of multiple types of services via VLAN. The VLANs running on VSOL PON devices are different from traditional VLANs. Access devices have a large number of users and provide multiple services such as HSI and VolP. To

Switch has abundant types of ports, which varies with the development of different LAN and transmission media. According to the function, the ports of switch can be classified into data ports and management ports. As the name suggests, data ports are mainly responsible for data transmission and management ports are used to configure and manage switch. Now, let’s see what ports there are exactly! 1. Data Ports RJ45: It’s the most common port on the switch with 8 grooves and 8 contacts. It’s assessable with an ordinary cable and a crystal