Sim800c hex data to tcp

Hi ,
I was working on sim800c .I tried to send data to tcp through hex . Using at+cscs i selected “hex” mode. i was able to send from 0x00 to 0x7f but from 0x80 to 0xff garbage data (i.e?) is present on the tcp console.please help me to solve this issue.

Thanks,
karthik

You can just send HEX data using CIPSEND, You dont need AT+CSCS