SFP connection in PTP 550 radio

I have PTP 550 installed. Its lan port is connected to media converter–>fiber cable 300meters --> media converter–>uplink gig port.

I want to bypass media converters and directly connect uplink into ptp550 by fiber.
Please share me connection process and sfp model for this.(i need 1Gig sfp connections).

Thanks in advance.

do you still need how to make the connection?