Can't make calls with asterisk

What I have: Laptop (wireless), MT box (1 wireless + 1 ether), Asterisk box (ether).

What I want: To make calls with X-lite from the laptop to Asterisk via Mikrotik.

I have been able to do this but only with one-way communication, i.e. what ever I say on the laptop goes through but I can’t hear the other person speak. Sadly I’ve lost this config (don’t ask) and now I am unable to repeat it.

How do I make this work?