Specifications

Chapter 8 – Network Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 114
A set consists of
• an integer indicating the availability of the operator,
• long alphanumeric format of the operator’s name and
• numeric format representation of the operator.
Any of the parameters may be unavailable and will then be an empty field (,,).
The list of operators comes in the following order: Home network, networks referenced in SIM
and other networks. The operator list is followed by a list of the supported <mode>s and
<format>s. These lists are delimited from the operator list by two commas.
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.
Syntax: Test Command: 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: AT+COPS?
+COPS:<mode>[, <format>[, <oper>]]
OK
Response: ERROR
+CME ERROR: <err>
Write Command: AT+COPS=<mode>[, <format>[, <oper>]]
Response: OK
ERROR
+CME ERROR: <err>
Parameter:
<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> This parameter can be displayed with AT&V
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> This parameter can be stored with AT&W and can be displayed with AT&V.
0 Long alphanumeric format of <oper>. Can be up to 26 (previously 16) characters long. Default.
(This is the factory default value and can be restored to 'x' with AT&F).
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).
Notes:
• It is not recommended to use the AT+COPS command before passing the CHV (card holder verification) /
SIM PIN1 verification. In case of entering of AT+COPS= 0 before PIN1 verification the module will answer
with OK and does not try to register to the network. Also, the test command should only be used after PIN1
authentication.