[cisco-voip] Something SRST-like for large installations

[Simon, Bill]

Need some suggestions for something SRST-like but for large installations.

Basically we would like to have dial-tone service in the event that the 
CallManager cluster, for some reason, bites the dust.

The largest SRST option seems to be 780 phones, but we often deploy 
large subnets of 800-1000 phones.  The campus overall has 11k phones at 
this time on one CM cluster.

Don't yell at me for putting 11k phones on one cluster; Cisco said we 
could do it ;-)  besides I am not at liberty to redo the whole 
infrastructure.  I just need to make a suggestion for redundant 
dial-tone service.

Any thoughts?

Bill