AT Command Set

4.41 AT+CREG Network registration

Test command

AT+CREG=?

Read command

AT+CREG?

Write command

AT+CREG=

[<n>]

Response

+CREG: (list of supported <n>s) OK

Parameter

See write command

ME returns the URC presentation mode <n> and an integer <stat> that shows the registration status of the ME. The location information elements <lac> and <ci> are returned only when <n>=2 and ME is registered to the network.

Response

+CREG: <n>,<stat>[,<lac>,<ci>]

OK

or if an error occurs which is related to ME functionality:

+CME ERROR: <err> (for error text see Chapter 9.1.1. or set AT+CMEE=2)

Use the write command to select the type of URC. Two types of URCs are available:

+CREG: <stat> if <n>=1. To be issued when the ME's network registration status changes

or

+CREG: <stat>[,<lac>,<ci>] if <n>=2. To be issued when ME's network regis- tration or network cell changes.

Response

OK

or if an error occurs which is related to ME functionality:

+CME ERROR: <err>

<err>

256

If <n> = 0: Attempt to set once again <n>=0 causes error

 

 

code 256.

 

 

If <n> > 0: Attempt to activate a URC mode that is already

 

 

active is acknowledged with OK.

Parameter

 

 

<n >

0

disable URCs

 

1

enable URC +CREG:<stat> to report status of network reg-

 

 

istration

 

2

enable URC +CREG:<stat>[,<lac>,<ci>] to report status of

 

 

network registration including location information. Please

 

 

note that optional parameters will not be displayed during

 

 

call.

<stat>

0

not registered, ME is currently not searching for new op-

 

 

erator

 

1

registered, home network

 

2

not registered, but ME is currently searching for a new op-

 

 

erator

 

3

registration denied

 

4

unknown

 

5

registered, roaming

<lac>

string type; two byte location area code in hexadecimal format

 

(e.g. "00C3" equals 193 in decimal)

<ci>

string type; two byte cell ID in hexadecimal format

MC35_ATC_01_V04.00

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02.04.2002

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Siemens MC35 manual 41 AT+CREG Network registration, +CREG n,stat,lac,ci, Lac
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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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