AT Command Set

Test command

Response

 

 

AT+CFUN=?

+CFUN: (list of supported <fun>s), (list of supported <rst>s)

 

If error is related to ME functionality:

 

+CME ERROR: <err>

 

Parameter

 

 

 

See below

 

 

 

 

 

 

Read command

Response

 

 

AT+CFUN?

+CFUN: <fun>

 

 

If error is related to ME functionality:

 

+CME ERROR: <err>

 

Parameter

 

 

 

See below

 

 

 

 

Write command

The write command can be used to reset the ME, to choose one of the SLEEP

AT+CFUN=[<fun>

mode levels or to return to full functionality. For <fun>=5 or 6 the application

[,<rst>]]

must be configured to use hardware flow control. This is necessary for the CTS

 

signal level to be transparently transmitted to the TE.

 

Response

 

 

 

OK

 

 

 

If error is related to ME functionality:

 

+CME ERROR: <err>

 

Parameter

 

 

 

<fun>

0

NON-CYCLIC SLEEP mode:

 

 

 

AT+CFUN=0 disconnects immediately any circuit or packet

 

 

 

switched call in progress. The ME goes into power saving

 

 

 

mode. While the NON-CYCLIC SLEEP mode is on, the AT

 

 

 

interface is not accessible. Consequently, once you have

 

 

 

set <fun> level 0, do not send further characters. Otherwise

 

 

 

these characters remain in the input buffer and may delay

 

 

 

the output of an unsolicited result code.

 

 

 

The first wake-up event stops power saving. The ME is

 

 

 

caused to return to full functionality and to stay fully opera-

 

 

 

tional.

 

 

1

Full functionality:

 

 

 

ME operates in IDLE, TALK, DATA, IDLE GPRS or DATA

 

 

 

GPRS mode.

 

 

 

If the ME is in one of the two CYCLIC SLEEP modes you

 

 

 

can issue AT+CFUN=1 to stop power saving and go back to

 

 

 

full functionality. Keep in mind that, unlike the reset

 

 

 

command described below, this action does not restart the

 

 

 

ME but only changes the level of functionality. See

 

 

 

parameter <rst> for details on the reset.

 

 

5

CYCLIC SLEEP mode:

 

 

 

AT+CFUN=5 disconnects any circuit-switched call in prog-

 

 

 

ress, but has no effect on a GPRS call. The ME goes into

the power saving mode 2 seconds after the last character was transmitted over the serial interface. Sending charac- ters over the serial interface resets the timer.

The first wake-up event stops power saving. Also, you can enter AT+CFUN=1 to terminate power saving.

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Siemens MC35 manual At+Cfun=?, At+Cfun?, +CFUN fun, Fun
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MC35 specifications

The Siemens MC35 is a compact and versatile modem designed primarily for mobile communication, data transmission, and machine-to-machine (M2M) applications. Launched in the early 2000s, it quickly became popular due to its blend of performance, reliability, and ease of integration, making it a solid choice for developers and businesses.

One of the key features of the MC35 is its support for GSM and GPRS technologies. This allows it to connect seamlessly to various networks, enabling users to transmit data at speeds that were impressive for its time. The GPRS capability can offer data rates of up to 171.2 kbps, allowing for efficient data transfer even in areas with limited connectivity.

The MC35 is designed to support both SMS and voice functionalities, making it adaptable for a range of applications. This includes remote monitoring, telemetry, and alarm signaling. The ability to send and receive SMS messages is a significant advantage for applications that require immediate alerts and notifications, enhancing its utility in security systems and industrial automation.

Furthermore, the modem is equipped with a range of interfaces, including serial communication (RS232), which makes it compatible with various hardware devices. This facilitates easy integration into existing systems, whether for industrial machinery or consumer electronics. Additionally, it features a robust software development kit (SDK), which enables developers to create custom applications tailored to their specific requirements.

Power consumption is another notable characteristic of the Siemens MC35. It is engineered to be energy-efficient, which is especially important for battery-operated devices or systems that require a prolonged operation without frequent recharging or maintenance.

In terms of physical characteristics, the MC35 is compact and lightweight, allowing it to fit into various enclosure designs without occupying much space. Its durability ensures it can perform reliably in different environments, making it suitable for outdoor and industrial applications.

To summarize, the Siemens MC35 stands out as a reliable modem with a rich feature set that includes GSM and GPRS support, SMS and voice capabilities, easy integration through various interface options, and energy-efficient operation. Its adaptability makes it a valuable tool for a wide array of communication and data transmission tasks, solidifying its place in the evolution of mobile communications technology.
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