Got a situation with a client that wants to take calls at other remote locations form the main system and we are using CCIS.

Can you route inbound calls to a virtual extension in one of the remote cabinets? Example line 1 ring to VE 250 in Remote cabinet

Also looking down the road for this client:
They are probably going to want to have calls ring at all 3 sites and looking to potentially maybe put ATA adapters off of the main system then connect them as analog trunks to the remote cabinets. Has anyone done this before? and any recomendation on an ATA that you had work on the 8100?
These systems are CCIS'd together because netlink is just not a cost effective (meaning point to point circuits or MPLS not either available or way to much money) The sites are small 6 to 8 phones in each location.

Thank you all in advance!!
Gary