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  • Overall Rating: 5
  • Price: 4
  • Quality: 4
  • Ease Of Use: 4
  • Usefulness: 5
Good for embedded usage – USB Tri-band GPRS Modem / Cell Phone Radio (GSM 900/1800/1900Mhz) Reviews

posted by Bertrix on 08/12/2011 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

Pros:
I have modded this gprs module for TTL usage by removing the usb to serial chip and connecting wires straight to the pcb. The module seems to have an IMEI different from 000000 but not sure if unique, check IMEI using: AT+CGSN
GPRS is very easy to use, just send
AT+CGATT=1 (Attach to gprs network, power consumption rises)
AT+CGDATA="PPP" (Open ppp session)
Now start pppd and your connection is up and running.
Send sms is easy too:
AT+CMGS="0123456789"
type message, end with ctrl+z
Cons:
None that I have found, maybe it has no built in tcp stack but this is obvious seeing the normal application. Also it does not do 3g or edge but this is clearly stated in the description.
Other:
Bottomline:
Good gsm module for using with embedded projects. Most cell phones nowadays do tethering so I'm not sure how useful it is to just use it with a computer.

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