Hi All,
New to forum. Searched and did not find much on this

, so here goes...
Looking for feedback on satellite phones for use in disaster situations. I'm a global business continuity manager and am doing research for the viability of using satphones as communication tools between major offices. Offices in Australia, Canada, UK, Japan and US (West Coast).
Looking for solid feedback from folks who have experience

(medium to heavy) with satphones in one or more of these regions.
My punch list (add to it if you think I missed anything MAJOR)
1. smallest,
totally mobile satphones (no antenna setups, bases, etc. These need to be able to be carried in a standard laptop bag like a cell phone might typically be carried...)
2.
service providers (I understand that different regions may need different providers based on satellites, exposure, etc.)
3.
vendors that you have dealt with that can provide hardware to more than one region, no more than 20 phones per region. Preference is to work with as few vendors as possible, so ones that you have had experience with globally, or at least multi-continent is desirable.
4.
accessories - besides the phones, and possibly spare batteries, what other accessories or necessary hardware would you consider mandatory for such a setup as descried above?
5.
lessons learned 
--- any feedback on any part of your experience will be helpful.
Thanks in advance!!!
TheShooter