ATA-186 with Software?

Archived from groups: comp.dcom.voice-over-ip (More info?)

Hello, i already have a couple of Sipuras SPA-2000 and i want to add
more ATAs to my network, i've looked at ATA-186 and have some
questions:

1- The Cisco reseller is saying that i have to buy a license SW-SMH-UL
with the ATA, why i need this software license? If i'm using FWD i
still need this software license?
2- Does the ATA-186 will communicate with SPA-2000 without problems? I
know that SPA-2000 uses G711u to communicate with FWD.
3- Can i use FWD on ATA-186?

Thanks
Antonio