Specifications

Chapter 3 – Status Control Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 38
“call“ Call in progress (0-1). Indicator value is “1” if at least one call is in state “active” or “held”.
Depending on the parameter <succ> selected with AT^SCFG the indicator “call” will be issued
• when a state transition ends in state “active” or state “unknown”, if <succ>=”restricted”,
• when any state transition (including transitions beginning or ending in state “unknown”)
occurs in the list of active calls or when a traffic channel is established, if
<succ>=”verbose”.
Also refer to Section 7.1, Call Status Information.
“roam“ Roaming indicator (0-1)
0: Registered to home network or not registered
1: Registered to other network
“smsfull“ A short message memory storage in the MT has become full (1) or memory locations are
available (0); i.e., range is (0-1)
“rssi“ Received signal (field) strength (0..5).
0: signal strength <= -112 dbm
1-4: signal strength in 15 dbm steps
5: signal strength >= -51 dbm
Received signal (field) strength can also be obtained with AT+CSQ. However, the signal
strength is scaled to value range 0..31 by this command.
<mode>
0 Indicator is deregistered. The indicator will not be presented as “+CIEV” URC, but can be
queried with AT+CIND?.
1 Indicator is registered, indicator event report allowed. Default. This is also the powerup default
of this parameter; it is not stored at power down.
Notes:
• Due to its restrictive value range, indicator “call” does not clearly reflect specific call states (such as alerting,
active, held etc.), but rather serves to trigger the application to retrieve the new call status from the list of current
calls with the AT commands AT^SLCC, AT+CLCC or AT^SCNI.
• If AT^SCFG setting <succ>=”verbose”, indicator “call” will be issued also when a traffic channel is established, or
when a call enters states “terminating” or “dropped” (see Call Status Information). In these cases, the relevant
information about the cause of the display is available only from AT command AT^SLCC.
Examples
Example 1
^SYSSTART
AT+CPIN=9999
OK
AT+CIND?
+CIND: 5,1,0,0,0,0,0 The battery is either full or no battery is connected to the ME. The bit
error rate of the signal quality is not available (since there is no call in
progress). The ME is registered to its home network.
OK
AT+CMER=2,0,0,2 Now activate the Indicator Event Report with AT+CMER.
OK
+CIEV: battchg,5
+CIEV: service,1
+CIEV: sounder,0
+CIEV: message,0
+CIEV: call,0
+CIEV: roam,0
+CIEV: smsfull,0
+CIEV: rssi,5 Full receive signal strength.
ATD0123456; Make a call.
OK
+CIEV: sounder,1 A set of “+CIEV” URCs is received.
+CIEV: call,1
+CIEV: sounder,0
+CIEV: call,0 Called party hangs up.
NO CARRIER
AT+CIND=,,,0,,0 Deregister the indicators “sounder” and “call”.
OK
ATD0123456; Dial the same call.
OK This time, no URCs are displayed.
NO CARRIER Called party hangs up.
Example 2
Deactivation of indicator “sounder” via AT+CIND
AT+CIND=? Query the current status of indicators.
+CIND: 5,1,0,1,0,0,0,4
OK
AT+CIND=,,,0 To deactivate indicator “sounder” (= fourth item in list of indicators).
OK
Example 3
Deactivation of indicator “sounder” via AT^SIND
AT^SIND=”sounder”,0 To deactivate indicator “sounder”.
^SIND: sounder,0,0
OK