The CCIE voice lab equipment lists includes a ref to "CRS ver 4.0(1)".
I'm not familiar with this product at the present time but from what I can tell it a linux based OS running on cisco certified hardware. My question is what is this for exactly? Is this needed to host apps like Cisco IVR, or Unified Meeting Place? Are these apps all included in the CRS package or are they sold separately? Or is it for some all together unrelated purpose? It's not explicitly listed as a separate product on Cisco's "Product & Services" section under "Unfied Communications and Video". Can anyone provide a mile high overview of where CRS fits into the big picture?
I'm particularly interested in knowing what CCIE Voice candidates have to know with regards to this product?