Firts the gateway didn`t register. Now is OK. I can Place call to PSTN but after I dial 0+number, I hear arround 4 rings before the gateway indicates line in use by LED1, and the call is placed. Incoming calls not arrive. I connected 4 lines from a Panasonic PBX. 3CX must to ring in ext 200 (registered), but it is not so. "Allow outbound calls on this line " is checked. "Answer incoming calls on this line " is checked.