Troubleshooting; Closing Tcp/Udp Links; Reference Process - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide
Notes:

5.4.2 Troubleshooting

Scenario
AT^IPSEND=1,"data"
AT^IPSEND=1,"data"
AT^IPSEND=1,"data"
AT^IPSEND=1,"data"
AT^IPSENDEX=1,2,<d
atalen>

5.5 Closing TCP/UDP Links

5.5.1 Reference Process

Command
AT^IPCLOSE=<link_id>
Issue 02 (2013-09-18)
 IPSEND and mode 0 of IPSENDEX can send displayable characters only. Mode 1 and
mode 2 of IPSENDEX can send all characters.
In Mode 2 of IPSENDEX (length restriction mode), except the port that receives data

entered by the user, all other ports are unavailable before the user finishes entering the
user data.
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Internal Protocol Stack Application Scenarios
Possible Error
Information
+CME ERROR: The
network has not been
opened yet
+CME ERROR:
Remain data is
sending
+CME ERROR: The
link has not been
established yet
+CME ERROR:
Normal error
+CME ERROR: Too
many data to be sent
Description
Close the specified link, server, or network, and
at the same time release the corresponding
resources. For details about the parameters,
refer to the related AT command document.
Solution
Before sending data, initialize
the protocol stack or accept the
link as a server.
The module is exiting
transparent transmission mode
and cannot send data. Wait
until the module completely
exits transparent transmission
mode.
Before sending data, create a
link or accept the link as a
server.
The module failed to send the
data. Ensure that the current
network's signal strength is
good.
The length of the data entered
by the user exceeds the length
specified by the command.
Ensure that the length of the
data is equal to the data length
specified by mode 2 of
IPSENDEX.
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