Need help and advice for Sangoma A108

Does anyone know how I can connect two A108 to each other in the same box. In this case would the 16 ports use the same point code/signaling on port one.

Is there any detailed documentation about A108. for example what are jumpers for.

I have recently installed an A108 in a box but the system sees it as A104. Has anyone faced such a problem.

Thanks in advance.