Sending emails through GPRS of SIMCOM 300S module

[vijay.mailto]

Hai,

I m working on the SIMCOM 300S module, it has inbuild tcp/ip stack too..

I want to send Email thru gprs. Is it possible in this modem ?

Please help me.

Thanks
Vijay

 

[FvM]

Re: EMAIL option in GPRS

It's possible whith any GPRS modem, if you implement the POP3 protocol in your software. I don't know if SIMCOM has advanced features to simplify TCPIP communication through GPRS, e. g. direct socket interface as Motorola G24 or even a POP3 client as newer Siemens modems, e. g. TC65.

Another option is to send Email through SMS, if the service provider supports it.

 

[vijay.mailto]

Re: EMAIL option in GPRS

Thanks

Can u give me the guideline to implement this POP3 and SMTP protocol in my
embedded controller.

But if we try to send the email thru sms, i think network provider will treat as a special
added service and may charge little bit high...

 

[FvM]

Re: EMAIL option in GPRS

As you clarified in your post SMTP would be actually the protocol to send Email while POP3 is for reception. There are basically two options, I think. To reuse existing TCPIP and SMTP/POP3 code from other projects or to write it from the scratch using respective RFCs. Knowledge of the RFCs is helpful to better understand existing code anyway.

I also don't know, if TCP communication has to be set up from the bottom through PPP with SIMCOM 300S or if higher level interface is provided. If complete PPP and IP stack has to be designed, I would try to get suitable code from an existing source. Or did you already implement basic TCP service in your project and only need EMail add-on?

Regarding Email through SMS, I included this option in a project with automatic SMS alarm. But the project initially used a GSM modem without GPRS capability, so there was no other option anyway. German t-mobile is charging standard SMS rates for SMS to Email now. Of course, you have a length limitation of 160 chars. For s high number of messages, GPRS would be more cost effective.

 

[vijay.mailto]

Re: EMAIL option in GPRS

Thanks.
My modem directly supporting TCP/IP communication thru AT Commands,
I can transfer the data to my server with the exiting AT commands. Ex. AT+CIPSTART, AT+CIPSEND.

I hope we no need to write PPP and STACK implementation routines, for ur reference i have attached the specification. Pls have a look.

 

[vijay.mailto]

Re: EMAIL option in GPRS

Can any one support me to get the SMTP/POP3 application layer sample source code.