2 at+cops operator selection, At+cops operator selection, At+cops – Siemens AC75 User Manual
Page 195: Ac75 at command set
AC75 AT Command Set
8.2 AT+COPS
s
AC75_ATC_V01.002
Page 195 of 569
10/30/06
Confidential / Released
8.2
AT+COPS Operator Selection
queries the present status of the AC75's network registration and allows to determine whether auto-
matic or manual network selection shall be used. Additional service is available with
.
Three operator selection modes are available:
• Automatic
AC75 searches for the home operator automatically. If successful the AC75 registers to the home network. If
the home network is not found, AC75 goes on searching. If a permitted operator is found, AC75 registers to
this operator.
If no operator is found the AC75 remains unregistered.
• Manual
Desired operator can be determined using the
write command. If the operator is found, AC75 reg-
isters to it immediately. If the selected operator is forbidden, the AC75 remains unregistered.
• Manual/automatic
The ME first tries to find the operator determined via
write command. If the ME is able to register
to this operator, it enters the manual operator selection mode. If the ME cannot find this operator or fails to
register to this operator, then it enters the automatic operator selection mode and starts to select the home
operators network or another (permitted) one. If the ME is registered and the manually selected network is
not available, the ME will remain registered without further result code notification.
The most recently entered operator selection mode is still valid after the ME was restarted (power-off/on).
The
test command lists sets of four parameters, each representing an operator present in the network.
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
s and
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
read command returns the current
and the currently selected operator. If no operator is
selected,
and
are omitted.
The
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
=4). The
selected operator name
will apply to further read commands, too.
Command settings are effective over all serial interfaces of the AC75.
Syntax
Test Command
AT+COPS=?
Response(s)
+COPS:
[list of present operators (
, long alphanumeric
s,,numeric
s ], , (list of
supported
s), (list of supported
s)
OK
ERROR