SimCom SIM7500 Series

Smart Machine Smart Decision
SIM7500_SIM7600 Series_AT Command Manual_V1.07 2017-12-25
307
OK
AT+CIPSTAT=?
+CIPSTAT: (0-9)
OK
15.2.18 Information elements related to TCP/IP
The following table lists information elements which may be reported.
Information
Description
+CIPEVENT: NETWORK CLOSED
UNEXPECTEDLY
Network is closed for network error(Out
of service, etc). When this event happens,
user’
s application needs to check and
close all opened sockets, and then uses
AT+NETCLOSE to release the network
library if AT+NETOPEN? shows the
network library is still opened.
+IPCLOSE: <client_index>, <close_reason> Socket is closed passively.
<client_index> is the link number.
<close_reason>:
0 - Closed by local, active
1 - Closed by remote, passive
2 - Closed for sending timeout
+CLIENT: <
link_num >,<server_index>,<client_IP>:<port>
TCP server accepted a new socket client,
the index is
<link_num>, the TCP server
index is <server_index>. The peer IP
address is <client_IP>, the peer port is
<port>.
15.2.19 Unsolicited TCP/IP command <err> Codes
0
operation succeeded
1 Network failure
2 Network not opened
3 Wrong parameter
4
Operation not supported
5 Failed to create socket
6
Failed to bind socket
7 TCP server is already listening
8 Busy
9
Sockets opened
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