ESW series
Optical switch for FTTH/PON
Features of the ESW series
High-speed switching function
Rapid (less than 10 ms) switchover to a backup when an OLT line card fails
High-speed (Tpy.5ms or less) switching by optical switches makes it possible to provide services with minimal downtime for users.
The optical switch uses a highly reliable mechanical type that is used in IX, etc., so even in the unlikely event of a failure, optical communication is ensured.
Automatic/remote switching function
Automatic and remote switching functions reduce costs for urgent response
Based on line card failure information from OLT, etc., automatic switching to a spare line card is possible. In addition, since maintenance, installation work, and obstacle relocation can be switched remotely, it is possible to reduce rush costs.
Reduced spare machine costs
Expandable to a maximum of 64 units per spare unit, reducing spare unit costs
The N+1 redundant configuration can reduce the redundancy cost compared to the 1 working: 1 spare configuration.
Furthermore, assuming that the frequency of simultaneous failures is not necessarily high for line cards, the number of redundant lines can be expanded to a maximum of 64 in order to minimize the number of spare line cards, thereby maximizing the reduction in redundancy costs.
Supports high-density, space-saving OLT
(16+1) x 2/4 mode also supports 2/4 port type line cards
The 2/4-port type line card, which aims to increase the rack storage rate and reduce the unit cost per port, achieves multi-port line card redundancy by interlocking 16+1 optical switches. Based on the sales record of linking up to 8 devices and linking up to 256 optical switches, it also supports multi-port type line cards.
Detail view
[Package example]
[Optical selector wiring diagram]
*Click on the image to enlarge it.
Conceptual diagram of optical selector connection