US Mountain Timezone

[tfc]

I have attached a screen shot of the relevant Time Zone options from the web UI.

The phones are located in Colorado USA which is in the TZ:

-7 United States-Mountain Time

Here are the details about USA TZs:

http://www.nist.gov/pml/div688/localtime.cfm

I think the bug is quite obvious. The implementations for

"-7 United States-Mountain Time" and "-7 United States-MST no DST"

appear to be the same yet should be implemented differently.

The implementation of "-7 United States-Mountain Time" should match the "-8 United States-Pacific Time" and "-6 United States-Central Time"

"-7 United States-MST no DST" is a unique implementation for Arizona.