Features
Switching policies
The Optical Switch has the following policies/criteria switching in case of fail in the main fiber (event LOS, Loss Of Signal):
- Reversible switching: switches to the secondary route in case of appearance of LOS in the main route. Return to the main route in case of disappearance of the LOS in the main route.
- Non Reversible Switching: In an event of LOS in the main road, commute to secondary one and remains there even when LOS disappears in the main route. The Optical Switch will return to the main route if the LOS event is declared in the secondary path and LOS has disappeared from the main route.
- Forced switching: the user manually selects the primary or secondary route. LOS events are ignored when switching.
These policies, as well as the interface defined as main are defined through a SNMP management console. .
Remote SNMP Management
The optical switch can be managed through a SNMP console, provided by a SNMP card inserted into a TeraSAE or TriSAE chassis.
Thought this console, the following operations can be performed:
- Define switching policy.
- Define which network interface (plant) is the main, in the case of reversible switching policy.
- Define the selected interface in the case of forced switching policy.
- Visualize and classify the traps reporting LOS events in both interfaces, and switching between network interfaces.
Switching time
The response time to a LOS event requiring switching interfaces is less than 50ms.
Insertion/extraction in-hot
The Optical Switch supports hot insertion and extraction in the TriSAE and TeraSAE chassis.
Product Sheet
Optical Switch
The Optical Switch of Telnet Redes Inteligentes is a optical switching equipment that allows developing 1+1 redundancy schemes full duplex (one fiber in each direction of traffic) in scenarios where is required a backup fiber circuit.
Allows working with wavelengths between 1270 and 1610nm, whether individual (second and third windows) or in DWDM and CWDM-type scenarios with different wavelengths simultaneously.
The Optical Switch has three optical interfaces: two located at the top of the front pannel corresponding to the redundant network interfaces (also called plant interfaces) and lower interface that corresponds to the local interface. In turn each interface has a reception (Rx: Optical Switch input) and a transmission interface (Tx: Optical Switch output).
Reception at the local interface is duplicated by an optical splitter (Splitter 50-50), whose two outputs are rerouted to the transmission of the two Network interfaces insertion. Losses due to the splitter are between 3.5 and 4dB for each interface.
The transmission on the local interface corresponds to the reception of one of two network interfaces. Such selection is made by an optical switch that switches based on the statement or cessation of LOS (Loss Of Signal) on both interfaces, and based on the switching policy set by the user. The insertion loss due to the switch are between 1 and 1.5dB.
Technical Specifications
Parameter | Value |
Wavelenght range | 1270nm - 1610nm |
Optical switch crosstalk | Better than 50dB (75dB typ.) |
Size | 128mm (H) x 25.1mm (W) x 182mm (D) |
Insertion losses | |
Route | Value |
Rx Local to Tx Plant 1 | 3.5dB - 4dB |
Rx Local to Tx Plant 2 | 3.5dB - 4dB |
Rx Plant 1 to Tx Local | 1dB - 1.5dB |
Rx Plant 2 to Tx Local | 1dB - 1.5dB |
Fibers interconection
- Rx plant interface 1 of node 1 with Tx plant interface 1 of node 2
- Tx plant interface 1 of node 1 with Rx plant interface 1 of node 2
- Rx plant interface 2 of node 1 with Tx plant interface 2 of node 2
- Tx plant interface 2 of node 1 with Rx plant interface 2 of node 2
