AT Commands Phone Terminal Terminated 51
AT+CSSN Supplementary Service Notification
AT+CAOC Advice of Charge
1X Releases the specific active call X
2 Places all active calls on hold and accepts the other (held or
waiting) call
2X Places all active calls, except call X, on hold
3 Adds a held call to the conversation
4 Connects two calls and disconnects the subscriber from both
calls
Description: Determines if the +CSSU and +CSSI unsolicited result codes are enabled.
Set command: AT+CSSN=[<n>[,<m>]]
Read command: AT+CSSN? Displays the current <n> and <m> settings.
Test command: AT+CSSN=? Shows if the command is supported.
Test command
response:
+CSSN: (list of supported <n>s),(list of supported<m>s)
Parameters:
<n>:
<n> Description
0 Disables the +CSSI result code presentation status in the TA
Default setting
1 Enables the +CSSI result code presentation status in the TA
<m>:
<m> Description
0 Disables the +CSSU result code presentation status in the
TA
Default setting
1 Enables the +CSSU result code presentation status in the
TA.
Description: Sets the current call meter value in hexadecimal format. Must be supported on the SIM
card. Enables the +CCCM unsolicited result code reporting.
Execution command: AT+CAOC[=<mode>]
Read command: AT+CAOC Displays the current <mode> setting.
Test command: AT+CAOC=? Shows if the command is supported.
Test command
response:
+CAOC: (list of supported <mode>s)
<n> Description