AT command problem in TCP @GSM Module

hi,everyone I try to establish a TCP connection in GSM module with ATcommand. and I sent AT-command in below,Please help me (in line that have // means i send to GSM) (if no// means that's response...
AT command problem in TCP @GSM Module

hi,everyone I try to establish a TCP connection in GSM module with ATcommand. and I sent AT-command in below,Please help me (in line that have // means i send to GSM) (if no// means that's response...
How to interface GSM module with 89s52

I am able to connect my sim900 gsm module with hyper terminal but I am not able to connect it with 89s52. Please help me to connect it.
How to interface GSM module with 89s52

I am able to connect my sim900 gsm module with hyper terminal but I am not able to connect it with 89s52. Please help me to connect it.
data transfer between gsm module and microcontroler

hi im working on the project SMS BASED NOTICE BOARD. in this im using Gsm module Simado matrix gdt 11. it will be interfaced with 8051 microcontroler.. we have all the circuits diagram of the project...