AT Command Set

5.10 AT+CNMI New SMS message indications

Test command

AT+CNMI=?

Read command

AT+CNMI?

Write command

AT+CNMI = [<mode>]

[,<mt>][,<bm>]

[,<ds>][,<bfr>]

Response

+CNMI: (list of supported <mode>s), (list of supported <mt>s), (list of supported <bm>s), (list of supported <ds>s), (list of supported <bfr>s) OK

Parameter

See set command

Response

+CNMI: <mode>,<mt>,<bm>,<ds>,<bfr> OK

Parameter

See set command

Response

TA selects the procedure how the receipt of new SMS messages from the network is indicated to the TE when TE is active, e.g. DTR signal is ON. If TE is inactive (e.g. DTR signal is OFF), the reception of messages shall be performed as speci- fied in GSM 03.38.

Note1: If the DTR signal is not available or the state of the signal is ignored (V.25ter command &D0), reliable message transfer can be assured by using +CNMA acknowledgment procedure.

Note2: The rules <mt>=2 and <mt>=3 for storing received SM are possible only if phase 2+ compatibility is activated with +CSMS=1

Note3: The parameter <ds>=1 is only available in phase 2+

OK

If error is related to ME functionality:

+CMS ERROR: <err>

Parameter

 

 

<mode>

0

Buffer unsolicited result codes in the TA. If TA result code

 

 

buffer is full, indications can be buffered in some other place or

 

 

the oldest indications may be discarded and replaced with the

 

 

new received indications.

 

1

Discard indication and reject new received message

 

 

unsolicited result codes when TA-TE link is reserved (e.g. in

 

 

on-line data mode). Otherwise forward them directly to the TE.

 

2

Buffer unsolicited result codes in the TA when TA-TE link is re-

 

 

served (e.g. in on-line data mode) and flush them to the TE

 

 

after reservation. Otherwise forward them directly to the TE.

 

3

Forward unsolicited result codes directly to the TE. TA-TE link

 

 

specific inband technique used to embed result codes and data

 

 

when TA is in on-line data mode.

<mt>

Rules for storing received SMS depend on the relevant data coding

 

method (refer to GSM 03.38 [2]), preferred memory storage (+CPMS)

 

setting and this value

 

Note: If AT command interface is acting as the only display device, the

 

ME must support storage of class 0 messages and messages in the

 

message waiting indication group (discard message)

 

0

No SMS-DELIVER indications are routed to the TE.

 

1

If SMS-DELIVER is stored in ME/TA, indication of the memory

 

 

location is routed to the TE using unsolicited result code:

 

 

+CMTI: <mem>,<index>

MC35_ATC_01_V04.00

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Siemens MC35 10 AT+CNMI New SMS message indications, At+Cnmi=?, At+Cnmi?, +CNMI mode,mt,bm,ds,bfr OK, +CMTI mem,index
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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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