Specifications

Chapter 21 – AT Command Examples
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 169
Incoming Voice Call
AT+CLIP=1 Enable incoming caller id presentation
OK
AT+CNUM Display module phone number
+CNUM: “Phone”,”8585551212”,129
OK
…Incoming call…
+RING Incoming call indication
+CLIP: "8585552323",129 Identification of the remote party
ATA Answer the call
OK ATA command is being processed
+WANS Call has been answered
+WCNT:3 Call Connected with CDMA Service Option 3, Traffic channel established
…Conversation…
+WEND:6 Call ended, end reason 6 (Normal Release), call released by the remote party
Call Waiting
ATD8585551212; Make a voice call (final semicolon character required for 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 party
+CCWA:”8582701234”,129 Indication of another incoming call, Audio beep sound in the earpiece
AT+WFSH Send a flash to the Base Station (toggle to the second incoming call).
OK AT command is being executed.
+WFSH Flash sent to the Base Station. Call switches to the second call; this is not 100% guaranteed
because the there is no confirmation from the Base Station.
…Conversation… Conversation with party
AT+WFSH Send a flash to the Base Station (toggle back to the first call).
OK AT command is being executed.
+WFSH Flash sent to the Base Station. Call switches to the first call; this is not 100% guaranteed
because the there is no confirmation from the Base Station.
…Conversation… Conversation with party
repeat as necessary
ATH Release all of the calls
OK ATH command is being executed
+WEND:10 Calls End
Originate Data Call
…Host configured… Host application configured for PPP dial up access
ATD#777 Initiate data call (no final semicolon character), number string is carrier specific
CONNECT Data call connected
…PPP negotiation… PPP layer startup and data exchange
…
…PPP layer shutdown… Host application terminates PPP session
NO CARRIER Data call terminated
AT Module re-enters command mode
OK
Originate Data Call Failure
…Host configured… Host application configured for PPP dial up access
ATD#777 initiate data call (no final semicolon character), number string is carrier specific
Depending on the PPP session failure point, the module may not enter back into command mode until a network server timeout forces
PPP session shutdown. For a broken data pipe situation, the “+++” command can be used to force the module back into command mode.
NO CARRIER Data call terminated
AT Module re-enters command mode
OK