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schematic fbus pic
Here is an sms controller with Nokia DLR-3P cable included: https://www.elektronika.ba/projekti/?akc=daj_projekt&idprojekt=6
Here is sms-box, an "AT-Command" translator, pdu-coder-decoder, all-in-one chip :)
https://www.elektronika.ba/projekti/?akc=daj_projekt&idprojekt=9
pstn modem support fsk
SMS over PSTN works only with FSK BELL202 1200bps. DTMF is not used for SMS applications over PSTN.
Try using FX-614 chip as FSK modem. Just talk to it over RS232 bus.
+cmgs:4
For PDU<->TEXT conversion and everything with SMS, you can use this little chip:
https://www.elektronika.ba/projekti/?akc=daj_projekt&idprojekt=9
siemens c55 at command
If you don't figure out how to handle AT commands, check this project out:
https://www.elektronika.ba/projekti/?akc=daj_projekt&idprojekt=9
There is an AT command +CFUN. I know that you can switch it off, but I am not sure about switching it back on. Maybe there is a hardware pin on it's connector or some combination of signals on the connector could power it up.
For interfacing 6210 and similar phones visit this link: **broken link removed**
For interfacing Siemens or Ericsson phones, just find pinouts for TXD RXD and GND.
www.elektronika.ba
Well, 80% AT commands are the same. The rest is phone-based AT commands which are not the same. Here is a pdf document in attachment - AT commands for siemens and AT+CUSD is not listed :cry:
AT Command set file:
Hello,
Is there an AT command for dialing /issuing gsm service commands?
For example, when you dial on your phone's keypad: *43# and press YES you would see "Requesting..." or something like that. That's cool.
The question is, how to do that by using AT commands?
I have tried:
ATD*43#...
siemens m35i at+cusd
Hello,
Is there an AT command for dialing /issuing gsm service commands?
For example, when you dial on your phone's keypad: *43# and press YES you would see "Requesting..." or something like that. That's cool.
The question is, how to do that by using AT commands?
I have...
python sms pdu converter
Hello,
Are you willing to share your code for decoding PDU -> TEXT and vice-versa? I will then re-write them in MPASM (using assembler).
The problem could be because you are using internal oscillator. The oscillator should be VERY precise, so use extarnal for no...
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