Parte I. ¿Qué es OLT?
La forma completa de OLT es terminal de línea óptica , que es un dispositivo utilizado para conectar la fibra óptica y transferir señales. Hace una diferencia significativa en PON (red óptica pasiva).
Funciones:
1. Por un lado, OLT se conecta al interruptor de nivel de cobertura con cable y se transfiere a señales ópticas. Por otro lado, se conecta al divisor óptico de los terminales del cliente con fibra óptica.
2. Controle, administre, mida la distancia a los dispositivos terminales del cliente como ONU .
3. OLT es uno de los dispositivos en los nodos de servicio en la red de acceso. Completa el acceso al servicio a través de la conexión con los dispositivos de los nodos de servicio correspondientes a través del puerto SNI.
Parte II. Componentes de OLT
OLT generalmente consta de:
1. Control board. Normally there are 2 boards involving main and backup boards on an OLT
2. DC power supply board
3. Fan unit. It’s mainly used to dissipate heat and monitor the environment.
4. Service frame
5. Other uplink boards
Part III. Types of V-SOL OLT
V-SOL OLT includes GPON and EPON OLT. There are 4 port GPON OLT, as well as 8/16 port GPON OLT. EPON OLT is also divided into 4/8/16 ports. They are compact designs, which can be applied in various scenarios. It has carrier-class security protection and supports dynamic routing protocol RIP & SPF, which ensures a secure network. It provides many services management like Internet access, WiFi setting, VoIP, CATV, security management, etc.
Part IV. Application of OLT
The OLT device coordinates with different types of ONU to achieve all kinds of access networks such as FTTC, FTTH, FTTO, FTTM, etc. According to different services, clients’ demanding and regions, there are different strategies of the deployment.
Shown as the below image, it is an FTTH(Fiber to the Home) application of V-SOL EPON OLT device V1600D4-DP. The OLT connects to the management switch and ONU. There is a splitter between OLT and ONU. The whole PON can provide several families with multiple services like IPTV, VOIP, IP Camera, etc.
