Technical data

WMO2 G900 / G1800 / G1900
WCOM/GSM/WMO2/WMO2ATDOC Friday 21 May 1999
WAVECOM confidential © 36
4.3.2 Operator selection +COPS
To select the operator, three possibilities exist:
1- The mobile enters the manual mode, and then try to find an operator
which is indicated by the application. If it finds and registers correctly, then
the mobile stays in idle mode.
2- The mobile enters the automatic mode, and then try to find the home
operator. If it finds and registers correctly, then the mobile stays in idle
mode ; if not, the mobile search automatically another network.
3- The mobile enters the manual/automatic mode, and the try to find an
operator which is indicated by the application (like in manual mode) . If this
attempt fails the automatic mode is entered.
To force an attempt to select and register a network operator, the
application must send the following command:
Command syntax: AT+COPS=<mode>, [<format> [ , <oper> ] ]
Response syntax: OK or +CME ERROR: <err>
The parameters values are the following ones:
<mode>:
0: automatic (default value)
1: manual
3: set only <format>
4: manual / automatic (<oper> shall be present), if automatic selection
fails, automatic mode is entered.
<format>: format of <oper> field
0: long format alphanumeric <oper>
2: numeric <oper> (default value)
<oper>: operator identifier (MCC/MNC in numeric format only for operator
selection)., long alphanumeric format can be up to 16 characters
long (see appendice 16.10}} for operator names description, field is
“Name”)
Application to GSM AT+COPS? Ask for current plmn
GSM to application +COPS: 0,2,20801
OK
Home PLMN is France telecom Itineris
Application to GSM AT+COPS=? Ask for PLMN list
GSM to application +COPS: (2,20801), (0,20810)
OK
Home PLMN is France Telecom
SFR network has been seen
Application to GSM AT+COPS=1,2,20810 Ask for registration on SFR network
GSM to application +CME ERROR: 3 Failed
Application to GSM AT+COPS=1,1,20810 Ask for registration on SFR network
GSM to application +CME ERROR: 4 Wrong parameters
Application to GSM AT+COPS=0,2 Ask for registration on home network
GSM to application OK Succeed
Application to GSM AT+COPS=3,0 Ask for setting alphanumeric format
GSM to application OK Succeed
Application to GSM AT+COPS? Ask for current plmn
GSM to application +COPS: 0,0,”F Itineris”
OK
Home PLMN is France telecom Itineris
Application to GSM AT+COPS=1,0,”F SFR” Ask for registration on SFR network
GSM to application +CME ERROR: 3 Failed
Application to GSM AT+COPS=4,0,”F SFR” Ask for registration on SFR network in
manual/automatic mode
GSM to application OK Command succeed
Application to GSM AT+COPS? Ask for current plmn
GSM to application +COPS: 0,0,”F Itineris”
OK
Home PLMN is France telecom Itineris !
So the attempt to register on SFR Network
has failed but the automatic selection on
Home PLMN has succeed.