[cisco-voip] Quick failover and SRST

[David Zhars]

We have 7 buildings all connected via fiber.  Each building has a 2801 for
SRST and 911 handling.

As an upgrade, we are going to install a redundant CM (version 8.x).  I have
one site that needs quick failover, and most of the reading I have done
implies about 40 seconds is required to recognize failure of the primary,
and initiate handoff to the subscriber.  I know there are some settings to
speed this up as well.

My quesiton is, should I keep SRST now that I will have redundant CMs?
Could they somehow assist in that 40 second timeframe, or are they sort of
the subscriber when you don't have a redundant CM?  What would I gain by
keeping SRST with a redundant CM?

And I'm just curious, but how does Cisco license the redundant CM?  Same
prices and maintenance as a regular CM?

thank you!
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