
Chapter 21 – AT Command Examples
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 172
Example of a Call Waiting Situation
When the MS is Powered On.
AT+CMEE=1 Enable the reporting of mobile equipment errors
OK
ATD8585551212; Make a voice call
OK ATD Command is being processed
+WORG:8585551212 Indication of call origination sent to the Base Station with dialing string 18001234567
+WCNT:3 Call Connected with CDMA Service Option 3, Traffic channel established.
Conversation… Conversation with first call.
+CCWA:”8582701234”,129 Indication of another incoming call. You will also hear a beep sound in the earpiece.
AT+WFSH Send a flash to the Base Station (toggle to the second call).
OK AT command is being executed.
+WFSH Flash sent to the Base Station. Call switches to the second call. However, this is not 100%
guaranteed because the there is no confirmation from the Base Station.
Conversation… Conversation with second call.
Repeat as Necessary
ATH Release the all calls.
OK ATH command is being executed.
+WEND:10 Calls End
Examples About Short Messages
Example 1: Receive a Short Message
AT+CNMI=2,1,1,1,0 SMS-DELIVERs are stored in NV, SMS-STATUS-REPORTs are routed to TE
OK
+CMTI:"MT",0 New message received. Message store in “MT” memory at index 0.
AT+CNMI=2,2,1,1,0 SMS-DELIVERs are routed to TE
+CMT:"8585551212","02/05/17,10 :43 :07",129,1,2,0,”5550000”,17
Test SMS Message Received message.
AT+CNMA Acknowledge the received message to the network.
OK
Example 2: Send a Short Message
AT+CNMI=2,1,1,1,0 SMS-DELIVERs are stored in NV, SMS-STATUS-REPORTs are routed to TE
OK
AT+CMGS=”8585551212” Send a SMS-SUBMIT to mobile phone
Product sends a 4 characters sequence: 0x0D 0x0A 0x3E 0x20
This is the first text line Edit first line and press carriage return (<CR>, 0x0D)
This is the last text line Edit last line and send message by pressing <ctrl-Z> (0x1A)
+CMGS: 1 Success: message reference 1 is returned from the SMS Service Center
+CDS:2,1,"8582431439",129,"02/05/17,10 :14 :17","02/05/17,10 :14 :27",32768
Success: report of successful message delivery received. Time of sending of the message
and receiving of the acknowledgment from the SMS Service Center is reported, along with
the status code.
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