AT Command Set

Number Description

36Regular PDP context deactivation

37QoS not accepted

38Network failure

39Reactivation requested

40Feature not supported

Causes related to invalid messages

81

Invalid transaction identifier value

95Semantically incorrect message

96Invalid mandantory information

97Message type non-existant or not implemented

98Message type not comaptible with protocol state

99Information element non-existent or not implemented

100Conditional information element error

101Message not compatible with protocol

111

Protocol error, unspecified

9.1.17 SIEMENS release cause for Session Management (SM) (AT+CEER)

Number Description

3The MS has not got any answer to the ACTIVATE PDP CONTEXT request message sent five times to the network

4A MT PDP context which is active or in the activation process is deactivated because another MT PDP context with the same TI is requested by the network to be activated

5A MT PDP context which is active or in the activation process is deactivated because another MT PDP context with the same TI is requested by the network to be activated. The activation request is rejected by the SM sending the cause 'insufficient resources' to the network because the SM was not able to perform the necessary comparisons for a static PDP address collision detection.

6A MT PDP context which is active or in the activation process is deactivated because another MT PDP context with the same TI is requested by the network to be activated. As a static PDP address collision with an MO activating PDP context has been de- tected by the SM the SM discards the activation request

7A MT PDP context request has been indicated but could not be processed in time. The activation request is rejected by the SM sending the cause 'insufficient resources' to the network.

9.1.18 SIEMENS release cause for GPRS API (AT+CEER)

Number Description

0Regular deactivation of the call

1Action temporarily not allowed

2Wrong connection type

3Specified data service profile invalid

4PDP type or address is unknown

255 Undefined

MC35_ATC_01_V04.00

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Siemens MC35 manual Siemens release cause for Session Management SM AT+CEER, Siemens release cause for Gprs API AT+CEER
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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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