What will your organization's costs from a given country
be?
How much traffic will a particular site or group of sites generate?
Does that traffic stay in the country of origin? If not, how
much of it is international?
How much traffic is to other corporate locations, as opposed
to going outside your company?
What does it cost to maintain a separate voice network? Are
there any economies of scale from consolidating not only your
voice and data network, but also other support functions, such
as help desk, network design, operations, administration, capacity
planning, etc.?