-\80\fBAT+CMGF=0\fP
-Set the default SMS message format to PDU type. Currently Siemens A1
-.RB "doesn't"
-support any other SMS format anyway.
-=======
-Query the currently set SMC center number to detect possibly unset SMS center.
+\fBAT\fP
+Check that the mobile survived our torture.
+
+.TP
+The following operations are dependant on the operation:
+.TP
+.BR --send / --send-mobildock :
+.RS
+.TP
+\fBAT+CMGF=0\fP, if fails \fBAT+CMGF=1\fP
+Set the default SMS message format to PDU type (preferred) or text mode (if
+PDU not available). Next \fB+CMGS\fP command is dependant on the mode selected
+by this one.
+.TP
+\fBAT+CMGS=\fP# chars if \fB+CMGF=0\fP
+This command physically sends the message and the resulting "\fB+CMGS:\fP" output
+is catched and returned as
+.B MR
+(message reference) number to the user. \fB# chars\FP corresonds to total data
+bytes sent to the phone (so the half of the hex-string, SMSC is included).
+SMSC number is preceding the rest of PDU to be conformant with GSM Phase 2
+specification. Siemens M1 or Siemens M20 rev. 1.x are known that
+.RB "don't"
+like this SMSC number, I have to get in touch with such device to be able to autodetect
+it properly (mail me if you want to be helpful).
+.TP
+\fBAT+CMGS="\fPphone # from user\fB"\fP if \fB+CMGF=1\fP
+The same as the previous command except that the message is text as pure text
+terminated with \fB<CTRL-Z>\fP character. SMSC number is not present anywhere
+in this mode.
+.RE
+.TP
+.BR --logo-send / --ring-send :
+.RS