[asterisk-biz] GSM cellular network (Global System Mobile)

[Michael Welter]

Does anyone know how CallerID is passed to a GSM cell phone?  Is the 
audio channel used?  Or the signalling layer?

Even though the phone's codec is optimized for speech, is it possible to 
use FSK (frequency shift keying) through the codec?

_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --

asterisk-biz mailing list
To UNSUBSCRIBE or update options visit:
  http://lists.digium.com/mailman/listinfo/asterisk-biz