if you really want to do this....
- create two trunks to the gatekeeper, one in each Device Pool with correct region. (note: you don't need different locations)
- put the two trunks in a route group with the 711 trunk higher up in the order
- enable BRQ service parameter on CCM
- on gatekeeper- emulate bandwidth h323 cisco
- configure 288k on gatekeeper bandwdith