Specifications

ISU AT Command Reference Phase VII AT Commands
Iridium Proprietary Version 2.45
20 June 2011 94
This parameter defaults to 7, equal to all classes, but the ISU only supports Voice Call Waiting so
this is illegal. Therefore in practice the DTE must supply <classx>=1.
<status>:
0 Call Waiting service not active for specified Class
1 Call Waiting service active for specified Class
<number>: quoted string type phone number of calling address in format specified by <type>
<type>: type of address octet in integer format (refer GSM 04.08 [8] subclause 10.5.4.7); default 145 when
dialling string is international number, otherwise 129.
If the network rejects a request to activate/deactivate the Call Waiting service due to it not being
provisioned (or for other reasons), the reported CME ERROR code will be 133 “requested service option
not subscribed”. This is strictly speaking a GPRS-related code (GSM 07.07 subclause 9.2.2), but is the
most informative choice in this case.
Informative examples:
The status of only the Voice class can be queried:
AT+CCWA=1,2,1
- if the command is successful, the ISU might return (after contacting the network):
+CCWA:1,1
If a remote caller tries to place a voice call to the ISU while the ISU already has a call in progress, and the
Call Waiting service has been made active for class Voice, then the network will send a message to the
ISU. Then, if <n> has previously been set to ‘1’, the ISU will send an unsolicited result code to the DTE,
e.g.:
+CCWA:”[phone]”,145,1
11.6 +CLCK - Facility Lock (9555/9522B version)
This is an extended version of the Phase II +CLCK command (section 6.4).
Command Possible response(s)
+CLCK= None (command ignored without
error)
+CLCK=<fac>,<mode>[<passwd>[,<classx>]]
When command unsuccessful
+CME ERROR: <err>
When <mode>=2 and command
successful
+CLCK:<status>[,<class1>
[<CR><LF>+CLCK:<status>,<class2>
[...]] (but the ISU will in
practice only report a single
line, <class1> = 1)
When <mode> not 2 and command
successful
None
Test command
+CLCK=?
List of supported <fac>s
+CLCK:(“CS”,”SC”,”FD”,”AO”,”AI”,”AB”)
This command is based on GSM 07.07 subclause 7.4, and is used to enable, disable or interrogate an ME or
a network facility <fac>.