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I tried to send a GET request using TCP over a SIM868 modem , but I always received "ERROR" after the AT command: AT+CIPSEND. (the modem works ok and I was able to send and receive SMS, HTTP request, phone calls , etc.)

I use minicom on my raspberry 3, with the following commands:

AT+CSTT="APN NAME" (I wrote here my APN)
OK
AT+CIICR
OK
AT+CIFSR
100.73.110.9

AT+CIPSTART="TCP","exploreembedded.com",80
OK
CONNECT OK

AT+CIPSEND
> 
GET exploreembedded.com/wiki/images/1/15/Hello.txt HTTP/1.0
SEND OK

After the I received the SEND OK , I never received the page content. Also according the AT Commands manual after you type the GET you must type CTRL+Z, what I did it. I tried the url in the browser and it works OK. Help will be vey appreciated!

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