Specifications

Si2404
24 Rev. 0.91
+GCI = ? List all possible country code settings.
+IFC Options
+IFC = A
+IFC = A,B
Specifies the flow control to be implemented.
A Specifies the flow control method used by the host to control data from the modem
0None
1 Local XON/OFF flow control. Does not pass XON/XOFF character to the remote
modem.
2 Hardware flow control (RTS)
B Specifies the flow control method used by the modem to control data from the host
0 None
1 Local XON/OFF flow control.
2 Hardware flow control (CTS).
+ITF Options
+ITF = A
+ITF = A,B
+ITF = A,B,C
Transmit flow control threshold.
A Threshold above which the modem will generate a flow off signal
<0 to 511> bytes
B Threshold below which the modem will generate a flow on signal
<0 to 511> bytes
C Polling interval for <EM><BNUM> indicator
0 to 300 in 10 msec units.
+MR = X Modulation reporting control.
X
Mode
0 Disabled
1 Enabled
If enabled, the intermediate result code is transmitted at the point during connect negotiation.
The format of this result code is as follows:
+MCR: <carrier> e.g. +MCR: V22B
+MRR: <rate> e.g. +MRR: 2400
+MS Options
+MS = A
+MS = A,B
+MS = A,B,C
+MS = A,B,C,D
+MS = A,B,C,D,E
+MS = A,B,C,D,E,F
Modulation Selection.
A Preferred modem carrier
V21 ITU-T V.21
V22 ITU-T V.22
V22B ITU-T V.22bis (default for Si2404)
B Automatic modulation negotiation
0 Disabled
1 Enabled
C,D Min TX rate/Max TX rate are optional numeric values that specify the lowest value
at which the DCE may establish a connection. If unspecified (set to 0), they are
determined by the carrier and automode settings.
E,F Min RX rate/Max RX rate are optional numeric values which specify the highest
value at which the DCE may establish a connection. If unspecified (set to 0), they
are determined by the carrier and automode settings.
+PCW = X Controls the action to be taken upon detection of call waiting.
X
Mode
0 Toggle RI and collect type II Caller ID if enabled by +VCID.
1 Hang up.
2 Ignore call waiting.
Table 9. Basic AT Command Set (Command Defaults in Bold) (Continued)
Command Action