as you say just now,

"connect the Ethernet of your PC to appropriate port (where you assigned the IP), change the PC IP to the same range as interface IP and then check the connectivity."

the ip for the ethernet port is assigned by another of router which not cisco by using dhcp & that is indirect related to cisco router. so it will auto assign for the pc's ip. this statement,

"change the PC IP to the same range as interface IP and then check the connectivity."

i not so understand & have to remember i using another router to connect internet & i already connect the cisco router using telnet.