Cisco Prisma IP RPR over SONET SDH Ring Interface Card Data Sheet

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Optical Switch Card for Diverse Route Network Protection 
Scientific-Atlanta’s Prisma IP
 Optical Switch Card is one of many new building 
blocks for the Prisma IP Platform.  The Optical Switch Card is a protocol 
independent, wideband optical switch that can enable a network to perform high 
speed (12ms) protection switching in diverse route supplied optical network nodes. 
 
The Optical Switch Card has two optical inputs and one common optical output.  
Each of the optical inputs is monitored for presence and power level of optical 
carriers on its inputs.  Switchover from one optical input to the other is activated if the 
user-provisionable optical level threshold is passed.  Front panel LEDs indicate input 
and switch status, as well as overall card status. 
 
There are several switching algorithms that can be selected from that permit 
customizing the switching mode for your network application.  The provisionable 
operating modes include Automatic switching with both revertive and non-revertive 
restoration, Forced (manual) switching, and Toggle switching modes. 
 
 
Features and Benefits 
 
•  Create diverse route protection and ring protection switching networks 
•  Dual optical input power / threshold detectors 
•  Composite optical switching, 12ms typical 
•  Remote optical composite power monitoring of inputs 
•  Switching algorithm in firmware (not software) for faster response 
•  Eight different switching modes for maximum network flexibility 
•  Full remote manageability with the ROSA
 Element Management System 
 
 
Digital Transport 
Prisma IP
 
Optical Switch Card