Specifications
TC35i AT Command Set
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TC35i_ATC_V01.05 Page 97 of 278 04.08.2003
4.19 AT+CIND Indicator control
TC35i supports indicator event reporting for the following items: signal quality, service availability,
generation of sound in the ME, indication of unread short messages, full SMS storage, call in pro-
gress and roaming activities.
There are two ways to display the status and event reports by indicators:
1. You can directly query the current status of each indicator, simply by using the Read command
AT+CIND?. The Read command returns the status no matter whether the indicator has been reg-
istered with the Write command AT+CIND=[<stat>[,<stat>[,...]]].
2. You can take advantage of Unsolicited Result Codes. These are the +CIEV URCs which the ME
automatically sends to the application, whenever the value of the associated indicator changes.
The presentation of these URCs depends on two settings:
a) The indicators must be registered with the Write command AT+CIND=[<stat>[,<stat>[,...]]].
By default, all of them are registered each time the ME is switched on. Any URCs you do not
need can easily be excluded if deregistered with <stat>=0.
b) The URC presentation mode must be enabled with AT+CMER (see Chapter 4.26).
Test command
AT+CIND=?
Response
+CIND: (<indDescr>,(list of supported <indValue>s)) [,(<indDescr>,(list of sup-
ported <indValue>s))[,...]]
Parameters
<indDescr> indicator names and their <indValue> ranges.
"battchg" Battery charge level (0-5),
where (0-5) means 0, 20, 40, 60, 80 or 100 per
cent of the remaining battery capacity. If no bat-
tery is connected to the ME, then the value will be
always equal to 5. See also Chapter 7.6.
"signal" Signal quality (0-7 or 99 if not measurable). The
indicated value is the bit error rate of the signal
received. See also AT+CSQ in Chapter 4.46.
"service" Service availability (0-1).
0: Not registered to any network
1: Registered to home network or, if ”roam”=1
then registered to another network
"sounder" Sounder activity (0-1). The indicator provides in-
formation about tones generated in the ME. The
value 1 means for example:
Incoming call - ME is ringing. Note that the URC
+CIEV: sounder will be output only if ringing tones
are activated with AT^SRTC (see Chapter 7.43).
Waiting call – ME generates waiting call tone (if
call waiting is enabled).
Outgoing call – ME generates Call Progress tone.
Outgoing call – ME generates BUSY tone.
The value changes to 0, when the tone stops.
"message" Unread short message(s) at memory location
<mem1> (0-1). See AT+CPMS (Chapter 5.11).
"call" Call in progress (0-1).
Applies to voice, data and fax calls. Indicator
value is "1" if at least one call is in state "active" or
"held".
The indicator is issued each time a call status
transition ends in the "active" state or when a call
is removed from the list of current calls.