Telit Wireless Solutions GE863 - Manual (Page 6)

GE863-GPS Software User Guide
1vv0300724 Rev. 2 - 24/01/07
2.2 Command Response Timeout
Every command issued to the Telit GE863-GPS returns a result response if response codes are
enabled (default) (see command ATQn). The time needed to process the given command and return
the response varies from command to command and may depend also from the network on which the
command may interact. As a result every command is provided with a proper timeout time, if this time
elapses without any result from the operation, then the ERROR response is reported as if the
operation was not successful.
The timeout time is quite short for commands that imply only internal set up commands, but may be
very long for command that interact with the network (or even Networks).
NOTE: In case no response is received after the timeout time has been elapsed, then try
repeating the last command and if still no response is received until the timeout time, then an
Unconditional Shutdown MUST be issued and then the device shall be powered ON again.
In the table below are listed all the commands whose timeout differs from the default 100 ms and their
effective timeout is reported:
Command Time-Out (Seconds)
+CBST 0.2
+CR 0.2
+CRC 0.2
+CRLP 0.2
+CSCS 0.2
+CEER 5
+CGMI 5
+CGMM 5
+CGMR 5
+CGSN 20
+CIMI 20
+CNUM 20
+CREG 5
+COPS 180
+CLCK 180
@CLCK 180
+CPWD 180
+CLIP 180
+CLIR 180
+CCFC 180
+CCWA 20
+CHLD 20
+CUSD 180
+CAOC 20
+CSSN 20
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