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Using a cell phone to send Text Messages

 
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zLon



Joined: 20 Jul 2015
Posts: 10
Location: Trenton, Ohio

PostPosted: Fri Jul 24, 2015 9:56 pm    Post subject: Using a cell phone to send Text Messages Reply with quote

I'm having a few issues and I'd like some feedback on and your experiences. Also, has anyone gotten an off-the-shelf phone to work?

I have a Samsung Galexy S4 Active on AT&T Mobile.
Windows Server 2012R2
Downloaded Samsung USB Driver for Mobile Phones
It is active on COM3.

I used 'Visual Basic Terminal' to do a simple 'AT' command to get an 'OK' and I did not get it. I also tried Hyperterminal and it also failed to produce an 'OK'.

When I go into the Control Panel/Phone and Modem/Diagnostics/Query Modem, I get:
ATQ0V1E0 -
AT+GMM - AT+GMM
SAMSUNG-SGH-I537
AT+FCLASS=? -
AT#CLS=? -
AT+GCI? -
AT+GCI=? -
ATI1 - I537UCUCOC6
ATI2 -
ATI3 -
ATI4 -
ATI5 -
ATI6 -
ATI7 -
ATQ0V1E0 -

So it appears to be responding to Windows. Should I try a different driver? Different phone? Do I need DUN installed on the phone? (I did this too)


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Tech Support



Joined: 25 Aug 2003
Posts: 4041

PostPosted: Sun Jul 26, 2015 2:33 pm    Post subject: Reply with quote

I'm not sure which part of the AT command set that devices supports, so there's a test I'd like you to run.

Open a connection to the modem with Visual Basic Terminal, then issue the following commands in sequence (hitting enter after each):

AT
AT+CSQ
AT+CMGF=1
AT+CMGS="CellPhoneNumber" (Note: Include the quotes)
Type the text of a test message.
Ctrl+Z (press this key combination on your keyboard)

Please let me know what happens after each command.



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zLon



Joined: 20 Jul 2015
Posts: 10
Location: Trenton, Ohio

PostPosted: Mon Jul 27, 2015 12:59 pm    Post subject: Reply with quote

I tried to send those commands, however I never got a response from any of the AT commands. I'm guessing that I don't really have a "real" serial connection.

When PageGate sends something to that serial port, I get the following:

07/27/2015 1:52:15 PM ========================================
07/27/2015 1:52:15 PM Start connection to carrier: CellPhoneText
07/27/2015 1:52:15 PM Connect using GSM protocol
07/27/2015 1:52:15 PM Setting communication parameters (57600,n,8,1)
07/27/2015 1:52:16 PM Attempting to reset modem
07/27/2015 1:52:16 PM Sent:AT<CR>
07/27/2015 1:52:18 PM Received:<CR><LF>OK<CR><LF>
07/27/2015 1:52:18 PM Modem reset
07/27/2015 1:52:18 PM Attempting to send carrier init string
07/27/2015 1:52:18 PM Sent:AT+CSQ<CR>
07/27/2015 1:52:23 PM Unable to send carrier init string
07/27/2015 1:52:23 PM Sent:AT+CMGF=1<CR>
07/27/2015 1:52:28 PM Command not supported... continuing
07/27/2015 1:52:28 PM ----------------------------------------
07/27/2015 1:52:28 PM Working on message to: testlon from: paging@xxxxxxxxx.com
07/27/2015 1:52:28 PM Formatting message
07/27/2015 1:52:28 PM Message contained in a single packet
07/27/2015 1:52:28 PM Sending packet
07/27/2015 1:52:28 PM Sent:AT+CMGS="5134xxxxxx"<CR>
07/27/2015 1:52:31 PM Sent:test test (07/27/2015 01:52 PM)<SUB>
07/27/2015 1:53:31 PM Error sending packet
07/27/2015 1:53:31 PM Sent:<ESC>

I guess it is time to start looking for a Multitech GSM device. If anyone has a unit that works well, please share you model number.

Thanks for your assistance,

Lon


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