Customizable optical switches with excellent reliability and track record of use with its rapid fault detection and path switching at the physical layer, the NTT-AT optical switch unit, NSW series, enhances the reliability of your network especially for Optical Path Protection (OPP).
Provides a robust, retentive switching function to ensure no interruptions even when a failure occurs. - Power outages, etc., will not lead to a major incident because of adoption of the movable fiber approach ensures retention of the optical path even in the absence of power.
Economical solution because there are a large number of ports and the initial cost is half that of products from other vendors. Redundancy can be achieved at low cost.
Sixteen channels can be housed and a large number of ports are provided per unit. This reduces both the required rack space and the cost per channel.
Extensive track record in providing high reliability
NTT-AT's optical switch, introduced in 2002, was the first commercial optical switch in Japan.
Product Specifications : Base Unit (NSW-BU-02)
|Number of slots||4|
|Number of Channels||16CH (Max)|
|Size||Rack Mount 1U Width 480 x Depth 405 x Height 44mm *1|
|Power Input Voltage||AC 85 ~ 250V|
|Operating Temperature||0 ~ 55°C|
|Operating Humidity||15 ~ 85% (non condensing)|
Notes *1 Not including projections
Product Specifications: Module
|Types of Optical Switch||1×2, 2×2, 2×4|
|Optical Switch Operation||Self maintenance type (maintain the power-off state)|
|Compatible Optical Fibers||SM MM 50μm|
|Optical Loss Detection Level||approx. -40dBm~+10dBm|
|Switching Protection Time||0-17000msec (1msec scale)|
|Wave Length||SM: 1300nm~1600nm, MM:850nm, 1300nm|
|Insertion Loss||with automatic switch: 2dB ≥*2 without automatic switch?1dB≥*2|
|Optical Connector||SC/SPC, LC/SPC, SC/APC|
Notes *2 Not including connector
Automatic Changeover / Manual Switch / Remote Surveillance / Remote Control / Grouping Linkage / Switch Protection / Switch Mode
GUI:HTTP / CLI:Console TELNET SSH
syslog / 3 types of account authorities / NTP Time / Synchronization / Fail-safe / External redundant power supply / Hot Swap
Notes *3 Functions differ according to the module model. Please contact us for more details.
Compact Optical Switch - CSW Series
Switches the optical paths in the physical layer without interrupting network services. Manufactured by NTT Advanced Technology Corporation,, Japan (NTT AT) CSW brings dedicated protection switching to optical networks for a reasonable cost.
Regular surveillance of optical power and physical switching to instantly restore networks
Dramatically cut network downtime by switching in the physical layer. Realizes an extraordinary availability of over 99.9999%! CSW’s automatic switching of the optical paths greatly reduces the network operating cost.
Passive optical device puts top priority on Fail-Safe operation
Because it is a passive (transparent) device, even in the case of a power outage, the network communication itself is not affected. Also, the CSW brings high flexibility, applicable to all types of optical transmission, regardless of the communications protocol.
Size (mm) 266 (W) x 150 (D) x 42 (H)
Optical Switching Time 10 msec (max)
System Management Web GUI, SNMP, Telnet, CLI
Robotic Fiber Switch - ROME500
ROME (Robotic Optical Management Engine) is L1 switch, realizing optical connection automated by robot. ROME enables smart fiber management at and laboratories
ROME500 manages optical cross connection automatically by robotic mechanism. Compared with MEMS and O-E-O methods, ROME500 has the advantage of low insertion loss and maintaining connectivity
Main Chassis: 17.4”(442mm) Width, 17.5”(443mm) Height, 31”(791mm) Depth, 211lbs(95kg)
LCU : 17.5”(444mm) Width, 1.7”(44mm) Height, 27.5”(698.25mm) Depth, 24lbs(11kg)
LCU: 100-240V, 50/60Hz 4A or -48/-60 V, DC 8A
Main Chassis: Supply from LCU
Single Mode SMF-28e, Multi-Mode OM4
1.0dB Max (patch panel to patch panel)
Single Mode : -50dB (UPC), -60dB (APC) Multi-Mode : -25dB
Main Chassis: 19”, 10RU LCU : 19”, 1RU
|MGMT Interface||RJ45(Ethernet) DB9 (Console)|