Defined Values; Examples; Ipstate-Report Tcp/Udp Connection State; Command Syntax - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
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MODE 1: In this mode, the user needs to add 0x7E in the end of each packet. The
module detects "0x7E" as a packet end. Then the data packet will be sent to the
remote TE. This mode just be used in UDP link.
The user sends data rules: if user data contains the 0x7E, 0x7E must convert to 0x7D
0x5E, and if user data contains the 0x7D, 0x7D must convert to 0x7D 0x5D.
The user receives data rules: the 0x7D 0x5E converted to 0x7E, the 0x7D 0x5D
converted to 0x7D. 0x7E identifies a UDP message end, not the actual user data.
Notes:

15.8.3 Defined Values

<link_id>: specifies the ID of an established connection. The value ranges from 1 to 5.

15.8.4 Examples

AT^IPENTRANS=1
OK
Now, the remote end will receive any characters (excluding consecutive three +)
entered by a subscriber.
15.9 ^IPSTATE–Report TCP/UDP Connection State

15.9.1 Command Syntax

Command
Issue 04 (2013-01-28)
Step 1: When the data length is reached "data packet length", module will send
such data to the remote TE. Then the module will continue to process remaining
data.
Step 2: When the length of the remaining data does not meet the "data packet
length", the module will start or reset packet delay timer.
Step 3: If the timer times out, the remaining data will be sent to the remote TE.
Step 4: If the packet delay timer running process, the module receives new data,
then repeat step 1 to 3.
This command is only supported in UART port. If the user uses this command to enter into
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the transparence transmission mode in other ports, it may cause some uncertain issues.
 When the module in server listen state, this command only supports the link that created by
the remote client to enter the transparence transmission mode. And the link which created
by the module can‟t enter the transparence transmission mode.
 When the module is in transparence transmission mode, a TCP connection request is
coming. The module will close the TCP link after accept it. And if there are some UDP data
packets received and this UDP link is not the trans link, the module will discard those
packets, and close the UDP link.
Possible Response(s)
<CR><LF>^IPSTATE: <link_id>,<state>,<errcode><CR><LF>
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