Alcatel Unleashed

Hello everione!
I have one main pbx (CS+reserv CS) and many small pbx like remote gateways in branches with own CS board.
What is the best way to connect all CS board in gateway to main PBX?
Could you tell me in with manual I can find this, please?

Thank you in advance!

Active version : R100.1-n2.534-4-b-ru-c83
Inactive version : R100.0-n1.291-74-a-k2-c83

You have many CS with different OPS files (network) or this is PCS (Passive Communication Server)?

@directdraw - Didn't you get this from a business partner, who did the installation for you?