Move mailbox is slow and use low bandwidth

I'm migrating Exchange 2007 to 2010.

The move mailbox work but is very slow. The two organization are connected with 20 MBits line but use just .5/1 Mb for exchange mailbox move so is very slow.

We need migrate 250 gb exchange...

I have tried to change some value of MSExchengeReplication.exe.config But is parameter just for the number in parallel request (    MaxActiveMovesPerSourceMDB = "25",    MaxActiveMovesPerTargetMDB. ) ...

How I can convince Exchange use all the available bandwidth for make the transfer ?

Thanks,

LSo

Lorenzo Soncini

LSo Lorenzo Soncini Trento TN - Italy