R3#sh run int s 1/0
Building configuration...

Current configuration : 259 bytes
!
interface Serial1/0
 ip address 208.28.1.2 255.255.255.248
 encapsulation frame-relay
 ip split-horizon
 no fair-queue
 frame-relay map ip 208.28.1.1 301
 frame-relay map ip 208.28.1.2 302
 frame-relay map ip 208.28.1.3 302
 no frame-relay inverse-arp
end

R3#