WEBCAM interfacing with Arduino uno and send it to any server using TCP IP protocol using SIM800l

I’m Roshan Ahire, I’m trying to connect USB webcam with Arduino, but I am not getting how to send command ID’s from Arduino to CAM…I have tried different methods but the camera is not sending an acknowledgment(ACK) or NACK.please guide me about it…
I’m sending the pdf that I am referring.
reffer:https://drive.google.com/open?id=0B_UnkSDjQwMmTkRBLXRrcFV2VGl3c2dRcFUxcnZsemFwbWFn

Hi Roshan,
Since you are saying its a USB based webcam (Datasheet suggests its RS232 enabled), i guess you are using some converter in between to connect to Arduino.?
Which command are you trying?
What baud rate are you using? Make sure it matches the camera baud rate.
The commands will be in HEX, are you sending in HEX or ASCII?