AT Command Set

2.45 AT+IPR Set fixed local rate

Test command

Response

AT+IPR=?

+IPR: (list of supported auto-detectable <rate>s), (list of supported fixed-only

 

<rate>s) OK

 

Parameter

 

See write command

Read command

Response

AT+IPR?

+IPR: <rate> OK

 

Parameter

 

See write command

 

 

Write command

AT+IPR=<rate>

Reference

V.25ter

This command specifies the DTE-DCE bitrate. When you set a fix rate, make sure that both DTE (TE) and DCE (= TA) are configured to the same rate. When you select autobauding the DCE will automatically recognize the bitrate currently used by the DTE.

A selected bitrate takes effect following the issue of any result code associated with this command (e.g. OK).

The setting is stored in the non-volatile memory and will be used whenever the engine is powered up again. However, in case of autobaud mode (+IPR=0) the detected DCE bitrate will not be saved and, therefore, needs to be be re- synchronized after restarting the GSM engine (see Chapter 2.45.1).

Response

OK or if error is related to ME functionality: ERROR / +CME ERROR: <err>

Parameter

<rate> bit rate per second

0 (Autobauding, see Chapter 2.45.1)

300

600

1200

2400

4800

9600

14400

19200

28800

38400

57600

115200

Note

Your current setting of AT+IPR will be preserved

•when you download new firmware (i.e. a firmware update does not restore the factory setting);

•in the event of power failure.

Generally, AT+IPR=x should be used as a standalone command. If nevertheless combinations with other commands on the same line cannot be avoided, there are several constraints to be considered:

•Avoid combinations with the AT commands listed in Chapter 1.5.2.

MC35_ATC_01_V04.00

Page 39 of 238

02.04.2002

Page 38 Page 40
Page 39
Image 39
Siemens MC35 manual 45 AT+IPR Set fixed local rate, At+Ipr=?, Rates OK, At+Ipr?, +IPR rate OK
Page 38 Page 40

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.
Top Page Image Contents