Specifications

Chapter 8 – Network Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 94
If the test command is used during an ongoing GPRS transfer, traffic will be interrupted for up to
one minute.
The AT+COPS read command returns the current <mode> and the currently selected operator. If
no operator is selected, <format> and <oper> are omitted.
The AT+COPS write command forces an attempt to select and register to the GSM network
operator (see note below). If the selected operator is not available, no other operator will be
selected (except <mode>=4). The selected operator name <format> will apply to further read
commands, too.
Test Command Syntax: AT+COPS=?
Response: +COPS: [list of present operators (<opStatus>, long alphanumeric <oper>s,,numeric
<oper>s ], , (list of supported <mode>s), (list of supported <format>s)
OK
ERROR
+CME ERROR: <err>
Read Command Syntax: AT+COPS?
Response: ERROR
+CME ERROR: <err>
Write Command Syntax: AT+COPS=<mode>[, <format>[, <oper>]]
Response: OK
ERROR
+CME ERROR: <err>
Parameter Descriptions:
<opStatus>
Status
0 Unknown
1 Operator available
2 Current operator
3 Operator forbidden
<oper>
Operator
If test command: Operator name in long alphanumeric format and numeric format.
If read command: Operator name as per <format>.
If write command: Operator name in numeric format.
<mode>
Parameter values 0 and 1 are stored non-volatile in the Multi-Tech wireless modem.
0 Automatic mode; <oper> field is ignored. Default.
1 Manual operator selection
Write command requires <oper> in numeric format; i.e., <format> shall be 2.
Read command returns the current <mode> and the currently selected <oper>. If no operator is
selected, <format> and <oper> are omitted.
2 Manually deregister from network and remain unregistered until <mode>=0 or 1 or 4 is selected.
3 Set only <format> (for AT+COPS read command).
4 Automatic / manual selection; if manual selection fails, automatic mode (<mode>=0) is entered
(<oper> field will be present).
<format>
0 Long alphanumeric format of <oper>. Can be up to 16 characters long. Default.
2 Numeric format of <oper>. This is the GSM Location Area Identification (LAI) number, which
consists of the 3-digit Mobile Country Code (MCC) plus the 2- or 3-digit Mobile Network Code
(MNC).