[cisco-voip] Providing phone service in Mumbai and Johannesburg

[Robert Kulagowski]

Opinions / experience wanted:

Backhaul call control to a CM cluster in London or put a standalone CM 
at each location?  RTT isn't terrible, and in Sydney (which is 
backhauled to U.S.) the latency results in delays with dialtone, etc, 
not voice quality (because we only do centralized VM, it's essentially a 
half-duplex stream, so the latency isn't really noticeable).

Concerns are the cost of a CM at each location, since offices have to 
pay for their own equipment.

In a perfect world, Cisco would have a version of IOS that provides 
local call processing (so that sites never go into SRST), with global 
configuration using CallManager (so that you're not learning a whole new 
paradigm / programming IOS)  So CME and SRST mode don't fit the bill 
because the help desk isn't trained for IOS-level access...

Also, in this perfect world, you can forward any line on the phone.