N11 V2
AT Command Manual
Copyright © Neoway Technology Co., Ltd
17
<N2>: Maximum number of re-transmission, integer type, ranging from 1 to 100,
where 3 is the default value. The range of 0 to 5 is supported currently.
<T2>: response timer for the multiplexer control channel in units of ten milliseconds,
integer type, ranging from 2 to 255, where 30 is default (300 ms)
<T1>: Wake up response timer in seconds, integer type, ranging from 1 to 255,
where 10 is default (10s)
If this parameter is not supported and the module returns 0 for it.
<k>: window size, for Advanced option with Error-Recovery Mode, integer type,
ranging from 1 to 7, where 2 is default
If this parameter is not supported and the module returns 0 for it.
Return Value
<CR><LF>OK<CR><LF>
Example
AT+CMUX=0
OK
Basic option. Other parameters are left
out.
AT+CMUX=2
ERROR
The set value exceeds the parameter
range and the module returns ERROR.
AT+CMUX=0,0,,512,254,5,255
OK
Set to basic option
AT+CMUX=1,0,,512,254,5,255
ERROR
Advanced
option,
which
is
not
supported.
The module returns ERROR.
AT+CMUX=?
+CMUX:
(0),(0),(1-6),(16-1510),(1-
255),(0-100),(2-255),(1-255),(1-7)
OK
Query
the
available
range
of
parameters.
AT+CMUX?
ERROR
The command format is incorrect.
The module returns ERROR.
Remarks
In accordance with the multiplexing protocol, two or more virtual channels are
set up on one physical port.
In general, three virtual channels are set up, among which one is used for
dialing up to access the Internet, and two are used for AT command sending
and receiving.
<T2> must be longer than <T1>.
AT+CMUX=0 is recommended to enable the multiplexing protocol control
channel.
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