Sumber: https://blog.elevenia.co.id/teknologi-wan/
. Leased Lines
WAN network technology leased lines or commonly referred to as dedicated lines is a WAN technology that uses direct connections between devices with constant line quality. In addition, a leased line is a telephone connection line provided by a public telecommunications company and is used to transmit digital data permanently. Typically, leased line transmission rates range from 64 kbps to megabytes per second.
. PSTN (Public Switched Telephone Network)
PSTN is a fixed telephone network using cables that are regulated in technical standards and have been defined by ITU-T (International Telecommunications Union) or UIT-T. The two institutions are world sectors that regulate telecommunications. PSTN itself is included in a public network that uses a circuit switch on a leased line or dial-up basis. The main network in PSTN consists of 3 types, namely backbone network, access network, and interconnection network. In addition, the components on the PSTN network consist of 8 types, including central, Main Distribution Frame (MDF), primary cable, cable housing, secondary cable, distribution point, boundary terminal box (KTB), and socket/roset.
. SONET (Synchronous Optical Network)
Synchronous Optical Network (SONET) is a digital communication standard technology with multiplexing protocol for a transmission system on optical fiber. Its function is to transfer the bit stream by means of LEDs. WAN network technology in the form of SONET has many advantages, you know. Among them are cost-effective transportation on access networks and core networks, supporting direct data services, providing transport services for long-distance applications, bandwidth management which functions to regulate routing and traffic processes, and backbone networks that can be used as a provider of long-distance network connectivity. far.
. X.25 Network
X.25 network technology is formed on the basis of Data Link and Physical Layer using the OSI model. Some X.25 services for WAN networks include being able to use a dedicated line with PDN to build a WAN connection, using variable frames, correction and error detection that can guarantee the level of reliability over analog lines at low quality, and can operate at speeds up to 64 kbps. on analog lines.
. Frame Relay Network
Frame Relay Network is a communication technology that has high speed and is widely used to connect SNA, LAN, voice applications (voice), and the internet. Frame relay itself is a protocol on a WAN network that operates at the first and second layers using the OSI (open system interconnection) model that can be implemented on several types of network interfaces. The frame relay features consist of good performance, high reliability, low overhead, dynamic bandwidth, and high speed features.
. VPN (Virtual Private Network)
This technology is already familiar to our ears. VPN, which stands for virtual private network, is a connection between private networks on a public network without an encrypted real connection. Using a VPN to access a LAN in a certain range is fairly safe to use. In addition, the VPN function consists of 3 kinds, including the confidentiality of data on a network (confidentiality), data integrity on the network (data integrity), and the source of the data will be authenticated (origin authentication).
. ISDN (Integrated Services Digital Network)
ISDN is a telecommunications system that is used as a provider of data, image, and voice services that are integrated into a network. On the other hand, ISDN also provides digital connectivity in a wide scope from end to end. The advantage that ISDN users get is that they will get cost savings and flexibility because the system is already integrated.
The advantages of using ISDN over other technologies are as follows:
1. Save costs because we only need one terminal for audio and video services
2. Flexible because it has a single interface for various terminals
3. Time efficiency because in one channel can be used to send various types of services
4. High speed and quality in data transmission because ISDN is 10 times faster than PSTN (Public Switched Telephone Network).
. ATM (Asynchronous Transfer Mode)
The term ATM which stands for Asynchronous Transfer Mode is also familiar to many people. ATM is a switching and multiplexing technology that is used to move traffic quickly and efficiently. Usually, circuit switching on ATM must have a provision that packets must be repeatedly set to frame positions. An example of how this can be done is by synchronizing Steps and time according to the clock hands and the application. Now, ATM transmission speed starts from 155 Mbps (OC-3 Port) to 2.5 Gbps.
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