AT Command Set

2.11 ATE Enable command echo

Write command

ATE[<value>]

Reference

V.25ter

This setting determines whether or not the TA echoes characters received from TE during command state.

Response

OK

Parameter

<value> 0 Echo mode off

1Echo mode on

Note

In case of using the command without parameter, <value> is set to 0.

2.12 ATH Disconnect existing connection

Execute command

ATH[n]

Reference

V.25ter

Disconnects any call in progress, such as voice calls, CSD data calls and active GPRS connections. Cancels an active PDP context.

Response

OK

Note:

OK is issued after circuit 109 (DCD) is turned off (RS-232 level), if it was previ- ously on.

Parameter

<n> 0 terminate call

Note

Using ATH in Multiplex mode (AT+CMUX)

•ATH terminates every data call, even if it is issued via logical channels 2 or 3.

•This behaviour is in accordance with ITU-T V.25 ter; (07/97, see “6.3.6 Hook control“: "ATH is terminating any call in progress")

Using ATH while GPRS is active (PDP context is activated or online):

•CAUTION: The execution of ATH cancels an active PDP context. This takes effect no matter whether ATH was used to end a voice or data (CSD) call, to manually reject a network requested PDP context activation as described in Chapter 6.3.2 or to terminate a call on one of the virtual channels in Multiplex mode.

The context deactivation can be avoided by terminating a current call with AT+CHLD=1 instead of ATH. See Chapter 4.16 for AT+CHLD.

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Siemens MC35 manual ATE Enable command echo, ATH Disconnect existing connection
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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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