20 May
2009
20 May
'09
12:37 p.m.
On Wed, 2009-05-20 at 05:18 -0700, Cameron Kaiser wrote:
AT commands are alive and well and in your mobile phone - how else do
you talk to the radio stack?
You're not pulling my leg, are you? That's actually pretty cool. Is it
the same kind of command set, ATDT and all?
Nope, not pulling your leg. ATDT doesn't seem to do anything useful,
although it may be trying to place an ISDN call.
Have a look at the crappy code in
http://www.gjcp.net/~gordonjcp/radiomap.tar.bz2
You'll see that I sent AT+CSQ to query the phone's RSSI, and AT+CREG? to
determine LAC and CellID.
There's a huge list of possible commands, including things like
manipulating the SIM card, sending text messages, placing calls,
answering calls, reading CLID, *all* kinds.
Gordon
Hayes modems
Just about all modems are Hayes compatible (and I think you can still buy
dial-up modems...)