Schematic of SMS telephone set for PSTN

[meshmesh]

sms fsk dect protocol

Dear all,

Does anyone has an example schematic for an SMS capable telephone set for PSTN .. ?

I know that I need FSK modem but I don't know what are the requirements in this chip .. ?

 

[bobcat1]

Re: SMS on PSTN

Look for DECT type phone's & components capability for SMS messagees

best regards


bobi

 

[Santos san]

Re: SMS on PSTN

usually the phone used 1200 Baud FSK modulation described in EN 300 659-2 for the FSK transmission function and EN 300 778-2 for the FSK receiving function in the Physical Layer .

if you want to know about the block diagram of the sms protocol stack
h**p://www.thales-ess.com/pdf_files/SMS-Flyer.pdf

and if you want a chip you can take a look for this Communications
Controller

h**p://www.cmlmicro.com/Products/Datasheets/Docs/cmx850ds.PDF