Does anyone know of a modern GSM phone which still has an RS232 data cable available for it ? (Most have gone to USB .. I want to send SMS messages from my embedded device which only has a RS232 port)
Thanks, Stuart
GSM cell phone with RS232 data interface ??
Mar 04, 2009
6 Replies
Most of the USB data cables I have examined are USB-RS232 converters. I daresay the majority of cellphones still have "RS232" (meaning async
3-wire serial, with 3.3V or 1.8V inverted signal levels.
Why not get a GSM module which has serial port normally TTL like levels see for example
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I was searching for one of these as well at one point, but all the phones I found had been discontinued. You could always use one of these:
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They're a bit expensive but they seem to work well (except for a quiet but irritating hissing noise coming from the power supply).
If you're planning on building many devices, then you might consider using a GSM module. They're cheaper but you have to add your own antenna, power supply, SIM socket, enclosure, etc.
Some of the low-end motorola phones sold recently as AT&T go phones had that feature, i think it was through the headphone jack.
Yes. You want something like a Wavecom m1206b modem.
Just to follow up cheapest place I found for RS232 GSM modem is:
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You can get one for £25.
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