Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 23 12/24/2010
2.2.6 ATDL Redial Last Telephone Number Used
ATDL Redial Last Telephone Number Used
Execution
Command
ATDL
Response
This Command redials the last voice and data call number used.
Note: This Command may be aborted generally by receiving an ATH
Command or a character during execution. The aborting is not possible
during some states of connection establishment such as handshaking.
If error is related to ME functionality
+CME ERROR: <err>
If no dial tone and (parameter setting ATX2 or ATX4)
NO DIALTONE
If busy and (parameter setting ATX3 or ATX4)
BUSY
If a connection cannot be established
NO CARRIER
If the remote station does not answer
NO ANSWER
If connection successful and non-voice call.
CONNECT<text> TA switches to data mode.
Note: <text> output only if ATX<value> parameter setting with the
<value> >0
When TA returns to Command mode after call release
OK
If successfully connected and voice call
OK
Reference
V.25ter
Note
z See ATX Command for setting result code and call monitoring
parameters.
z Return the numbers and symbols which ATD supports if there is no
last dialing context.
2.2.7 ATE Set Command Echo Mode
ATE Set Command Echo Mode
Execution Response