What protocol is used

Hi

Which protocol is used for transferring data from gateway to the things network servers ?

I would imagine its TCP\IP

That depends on the packet forwarder used. Some packet forwarders use the Semtech protocol which is UDP based. The ttn-gateway-connector protocol is TCP based, so is the new Basicstation software.

can i use the poly_pkt_fwd from ic880a Installation with ttn-zh?