User's Manual

Telit TRIZIUM Product Description
80264ST10007a Rev. 4– 09/09/04
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5.2.2 Information responses and result codes
The TA response, in case of verbose response format enabled, for the previous examples command line could be as
shown below:
information response to +CMD1? <CR><LF>+CMD1:2,1,10<CR><LF>
information response to +CMD1=? <CR><LF>+CMD1(0-2),(0,1),(0-15)<CR><LF>
final result code <CR><LF>OK<CR><LF>
Moreover there are other two types of result codes:
• result codes that inform about progress of TA operation (e.g. connection establishment CONNECT)
• result codes that indicate occurrence of an event not directly associated with issuance of a command from TE (e.g.
ring indication RING).
Here the basic result codes according to ITU-T V25Ter recommendation
Result Codes
Numeric form Verbose form
0 OK
1 CONNECT
2 RING
3 NO CARRIER
4 ERROR
6 NO DIALTONE
7 BUSY
8 NO ANSWER
5.2.3 Command Response Timeout
Every command issued to the Telit TRIZIUM module returns a result response if response codes are enabled (default). 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 an ERROR response can be reported as if
the operation was not successful and the operation is anyway terminated.
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 a set of Networks).
The default timeout is 100 ms for all the commands that have no interaction with the network or upper software layers.
In the table below are listed all the commands whose timeout differs from the default 100 ms and their effective timeout
is reported:
Command Timeout (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