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Siemens MC35 manual Atsnfa Set or query microphone attenuation, Atsnfa=?, Atsnfa?, Snfa atten OK

Models: MC35

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AT Command Set

8.19 AT^SNFA Set or query microphone attenuation

Test command

Response

AT^SNFA=?

^SNFA: (list of supported <atten>s)

 

Parameter

Read command

AT^SNFA?

See read command

Response

TA returns the current attenuation value on the microphone path for the current audio device (selected by AT^SNFS, see section 8.25).

 

^SNFA: <atten> OK

 

<atten> integer type value

 

0 (0x0) – 65535 (0xFFFF)

 

attenuation = 20 log(<atten>/32767)

 

0

=> microphone is muted

 

32767 => no attenuation on the microphone path

 

values greater than 32767 are not used

 

 

Write command

TA controls the large-scale attenuation on the microphone path for the current

AT^SNFA=

audio device (selected by AT^SNFS, see 8.25) with the following restrictions:

<atten>

- it is not allowed for audio device 1

 

- as long as the microphone is muted, the write-command is temporarily disabled

 

- setting of value 0 is not allowed (use AT^SNFM=0 for this; see section 8.22).

 

- for values greater than 32767, 32767 will be used

 

Response

 

 

OK

 

 

If error is related to ME functionality

 

+CME ERROR: <err>

 

Parameter

 

 

See read command

 

 

Reference

Command does not require a PIN. The command is provided for compatibility with

 

M20 and is an alternative to AT^SNFI (see section 0, second parameter). Both

 

commands use the same audio parameter inCalibrate. To make the changes per-

 

sistent use AT^SNFW (see section 8.27).

 

 

 

Examples

^SYSSTART

 

 

at^snfa=?

 

 

^SNFA: (0-65535)

 

OK

 

 

at^snfa?

 

 

^SNFA: 32767

OK at^snfs=4

OK at^snfa=1

OK at^snfa? ^SNFA: 1

MC35_ATC_01_V04.00

Page 194 of 238

02.04.2002

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Siemens MC35 manual Atsnfa Set or query microphone attenuation, Atsnfa=?, Atsnfa?, Snfa atten OK
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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.