Hello everyone!
Today, I will share with you basic information about OLT MA5800.
OLT (Optical Line Terminal) is a multi-service access device. It is the main part of the access network, usually located in the CO (Centar Office). The main function of the OLT is to control the flow of information through the ODN, going in both directions. OLT allows connection to a switch or router in the core network (control board) and connection to ONU devices via ODN (service boards). All OLTs MA5800 support FTTB, FTTC, FTTD, FTTH, and D-CCAP networks. By default, the max distance for transmission is 20km.
Figure 1. OLT MA5800-X2
The MA5800 series have four models: MA5800-X17, MA5800-X15, MA5800-X7 and MA5800-X2.
OLT is composed of chassis, control board, service board, power board, fan module and universal interface board. All OLT MA5800 models have redundante modules, except MA5800-X2. This is very important. OLT reliability is higher thanks to redundancy - 2 control boards, 2 power boards and many service boards.
In the next table, we can see the type of boards:
Board Type |
Board Name |
|
Control Board (SCU) |
MPLA(E), MPLB, MPSA only for MA5800-X2 |
|
Upstream interface board (GIU) |
GE/10GE Ports |
NXED |
Universal Interface Board (GPIO) |
CIUA |
|
Power Board |
PILA, PISA only for MA500-X2 |
|
Service board |
GPON |
GPHF(E), GPSF |
10G GPON |
XSHF(E), XSHD |
|
TDM |
EDSH |
|
P2P |
OGHK |
|
Ethernet |
OXHD |
|
Power boards provide OLT with a stable power supply of -48Vac. In the event of a single power supply problem, the OLT will continue to operate because it has a redundant power supply.
Control boards are the most important part of the system. They enable uplink connections and configuration and management. They contain the complete OLT configuration. They have 4 GE/10GE ports for uplink connections and CON, ETH, ESC and USB ports for monitoring and maintenance. During normal operation, one control board is active while the other is standby. In case of problems with the main board, the standby board takes over the role of the main one. Because that, when we configure OLT, we must save configuration and data. But more details about them in a separate article.
Service boards are boards that enable the connection of OLT and ONUs. There are many different types of boards with multiple ports. In case of a problem with one of the boards, another one can be used.
Thank you!
