SIM800 datasheet(96/380 Pages) SIMCOM

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SIM800 Series_AT Command Manual_V1.09

2015-08-03

whose duration is determined by <duration>.

<duration> Duration of the tone in 1/10 seconds range :1-255

Parameter Saving

Mode

NO_SAVE

Max

Response

Time

Number of DTMF characters*duration.

Reference

3GPP TS 27.007

[13]

Note

3.2.38 AT+CMUX

Multiplexer Control

AT+CMUX

Multiplexer Control

Response

+CMUX: (0)

Test Command

AT+CMUX=?

Parameters

See Write Command

Response:

+CMUX:[<mode>[,<subset>[,<port_speed>[,<N1>[,<T1>[,<N2>[,<T2

>[,<T3>[,<k>]]]]]]]]]

ERROR

Read Command

AT+CMUX?

Parameters

<mode>

Multiplexer transparency mechanism

0 Basic option

The way in which the multiplexer control channel is set up

0 UIH frames used only

<port_speed> Transmission rate

1 9600 bits/t

2 19200 bits/t

3 38400 bits/t

4 57600 bits/t

5 115200 bit/s

6 230400 bits/t

7 460800 bits/t

Proprietary values, available if MUX NEW PORT

SPEED FTR is activated

<N1>

Maximum frame size

1-255

Default: 127

<T1>

Acknowledgement timer in units of ten milliseconds

1-255

Default:10 (100 ms)

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