I have a BES server with 15 users. All the users are using cingular. One user wants to switch to verizon. Is this possible using one BES server, or do I need a seperate BES server for each provider?

do it. you'll be fine.


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You can have as many carriers you want on a single bes server provided they are all in the same region. (ie: UK providers have to be on a BES server pointing to the UK NOC and NorthAmerica providers have to be on a BES server pointing to the NA NOC)

I have US, Canadian, and UK employees on my BES server.
For Canada we use Rogers and Bell.
For the UK we use Vodafone, and (I think its) O2.
For the US we use AT&T which is now (I think) verizon or cingular.

Yeah we have Cingular, Verizon, Sprint, Nextel, whatever. They all work fine.