Troubleshooting - Huawei MU609 Application Manual

HUAWEI MU609 HSPA LGA Module
Application Guide
313233347D5D7D5E7E
Notes:

5.6.2 Troubleshooting

Scenario
AT^IPENTRANS=1
AT^IPENTRANS=1
AT^IPENTRANS=1
AT^IPCFL=5,10
Issue 02 (2013-09-18)
The transparent transmission mode of the internal protocol stack supports UART only.

 The internal protocol stack allows only one link to enter transparent transmission mode. In
addition, before entering transparent transmission mode, ensure that only one link exists at
the current physical port. If the module functions as a server, the link can enter transparent
transmission mode only when the link is requested by a remote client and accepted by the
server.
 The settings (including the time- and length-based transmission mode and 7E detection
mode) of transparent transmission mode must be configured using ^IPCFL before the
transparent transmission mode is enabled. For details about how to configure the settings,
refer to the AT command document.
Possible Error Information
+CME ERROR: Invalid port
for transparent mode
+CME ERROR: More than
one link in physical port
+CME ERROR: The
physical port is in listen
state and has no client
+CME ERROR: Forbidden
operation in transparent
mode
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Internal Protocol Stack Application Scenarios
Receive data in 7E detection mode (applies to
UDP only).
The data received by the module is
313233347D7E in hexadecimal format. After
receiving the data, the module transforms 7D to
7D5D and 7E to 7D5E, and adds 7E as the
ending characters to the end of the data before
presenting the data to the user.
Solution
This indicates that the link is
not established at a UART
port. To solve this problem,
establish a link from a UART
port and set the UART port to
enter transparent
transmission mode.
There are more than one link.
Use ^IPCLOSE to close
other links before entering
transparent transmission
mode.
The module functions as the
server but does not accept
the link requested by the
client. Accept the link before
entering transparent
transmission mode.
^IPCFL cannot be used
during transparent
transmission. Exit
transparent transmission
mode before running
^IPCFL.
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