Specifications

Chapter 7 – Call-Related Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 85
7.21 AT+CLCC List Current Calls of ME
Description: The execute command returns a list of current calls of ME. If command is successful, but
no calls are available, no information response is sent to TE.
Test Command Syntax: AT+CLCC=?
Response: OK
Exec Command Syntax: AT+CLCC
Response: [+CLCC: <idx>, <dir>, <stat>, <mode>, <mpty>[, <number>, <type>[, <alpha>]]]
[+CLCC: <idx>, <dir>, <stat>, <mode>, <mpty>[, <number>, <type>[, <alpha>]]]
[+CLCC: ...]
OK
ERROR
+CME ERROR
Parameter Descriptions:
<idx>
Call identification number as described in GSM02.30 subclause 4.5.5.1; this number can be used in AT+CHLD
command operations.
<dir>
0 Mobile originated call (MOC)
1 Mobile terminated call (MTC)
<stat>
State of the call
0 Active
1 Held
2 Dialing (MOC)
3 Alerting (MOC)
4 Incoming (MTC)
5 Waiting (MTC)
<mode>
Bearer/teleservice
0 Voice
1 Data
2 Fax
3 Voice followed by data, voice mode (only in connection with single numbering scheme AT+CSNS)
4 Alternating voice/data, voice mode (only in connection with single numbering scheme AT+CSNS)
5 Alternating voice/fax, voice mode (only in connection with single numbering scheme AT+CSNS)
6 Voice followed by data, data mode (only in connection with single numbering scheme AT+CSNS)
7 Alternating voice/data, data mode (only in connection with single numbering scheme AT+CSNS)
8 Alternating voice/fax, fax mode (only in connection with single numbering scheme AT+CSNS)
9 Unknown
<mpty>
0 Call is not one of multiparty (conference) call parties
1 Call is one of multiparty (conference) call parties
<number>
Phone number in format specified by <type>
<type>
Type of address octect
145 Dialing string <number> includes international access code character ‘+’
129 Otherwise
<alpha>
Alphanumeric representation of <number> corresponding to the entry found in phonebook; used character set
should be the one selected with command AT+CSCS (Select TE Character Set).
The maximum displayed length of <alpha> is 16 characters. If <alpha> has more than 16 characters, only the
first 15 characters are displayed. To indicate an overflow, a special character will be used as the 16
th
character.
This is a space if the character set selected with AT+CSCS is ‘GSM’, or ‘E400’ if the character set is ‘UCS2’.
Due to time constraints on the necessary evaluation of the phonebook, this parameter may show a default value
in early call phases (e.g., for <stat>= “dialing”, “incoming” or “alerting”), even if a phonebook entry is present for
the number concerned.
Note:
Teleservices other than voice, data, fax are not fully supported by ME. They are used only in connection with the
handling for AT+CSNS, and may therefore occur in parameter <mode> for mobile terminated calls.