AT Command Set

4.30 AT+COPS Operator selection

This command can be used to query the present status of the ME's network registration and to de- termine whether automatic or manual network selection shall be used.

Automatic mode:

Lets the ME automatically search for the home operator. If successful the ME

 

registers to the home network and enters the IDLE mode. If the home network

 

is not found, ME goes on searching. If then a permitted operator is found, ME

 

registers to this operator. If no operator is found the ME remains unregistered.

Manual mode:

Desired operator can be manually entered, using the AT+COPS write com-

 

mand syntax. If operator is found, ME registers to this operator. If the selected

 

operator is forbidden, the ME remains unregistered.

Manual/automatic:

In this mode, the ME first tries to find the operator that was manually entered.

 

If the ME fails to register to this operator, then it starts to select automatically

 

another network.

Test command

AT+COPS=?

TA returns a list of quadruplets, each representing an operator present in the network. The list of operators is presented in the following order: Home net- work, networks referenced in SIM, and other networks. Two commas in a succession (,,) are a placeholder for the non-implemented <format>1 (short alphanumeric operator name).

Response

+COPS: (list of supported (<stat>, long alphanumeric <oper>,, numeric <oper>s) [,(list of supported <mode>s), (list of supported <format>s)] OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

 

 

<stat>

0

unknown

 

1

operator available

 

2

current operator (registered)

3forbidden operator

<oper> operator as per <format>

<mode> 0 - 4 see write command <format> 0 - 2 see write command

Read command

AT+COPS?

TA returns the current mode and, if registered, the currently used operator. If the ME is unregistered, <format> and <oper> are omitted.

Response

+COPS: <mode>[, <format>[, <oper>]] OK

If error is related to ME functionality:

+CME ERROR: <err>

Write command

AT+COPS=

<mode>

[,<format>[,<oper>]]

Parameters

See write command

The write command allows you to choose whether the GSM network operator is to be selected automatically or manually. When using the manual mode, the <operator> must be entered, no matter whether you want to search for the home operator or another one.

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Siemens MC35 manual 30 AT+COPS Operator selection, At+Cops=?, At+Cops?, +COPS mode, format, oper OK
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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.

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