The Prisma II bdr Dig Rev 2:1 Dual Mux Sys for High Density Installations is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2012-08-17
End-of-Support Date: 2017-08-31
Cisco's End-of-Life Policy
You can view a listing of available null offerings that best meet your specific needs
If you want support information for the Prisma II bdr Dig Rev 2:1 Dual Mux Sys for High Density Installations documentation, it may be available through Cisco.com Search or in the Cisco Community