Siemens AC75 - Manual (Page 67)

AC75 AT Command Set
2.14 AT^SCFG
s
AC75_ATC_V01.002 Page 67 of 569 10/30/06
Confidential / Released
Power saving mode 9 timeout
This parameter can be used to query or configure the wake up time for power saving mode 9 (see
AT+CFUN
with
parameter
<fun>
=9).
Parameter is global for the ME, volatile and will not be reset by
AT&F
.
5...20 (P) ...36000 The granularity of the timeout value is 100ms (i.e. a value of 10 equal 1 sec-
ond). The minimum timeout value that can be applied is 5, but accuracy is only
guaranteed for timeout values greater than 20.
Allowed radio band(s)
The feature "Radio/Band" with its parameters
<rba>
,
<rbp>
and
<rbc>
can be used to set and query prefer-
ences for selecting frequency bands.
The AC75 normally uses an automode algorithm designed to recognize automatically the radio bands of the cur-
rent country, typically a combination of two bands. Commonly used dual-band combinations are, for example,
900/1800 MHz in European countries or 850/1900 MHz in North America. The standard radio band combination
of a country depends on the ARFCNs (Absolute Frequency Channel Number) and the MCCs (Mobile Country
Code) visible at the air interface. This enables the ME to easily find the standard band or band combination of
a country every time after power-up and, thus, usually eliminates the need for the subscriber to make any
changes. So, if automode is used and the allowed bands are not restricted with
<rba>
the response parameter
<rbc>
shows the standard band(s) of the current area.
As an alternative, if any bands other than those automatically selected by the ME are needed, the automode
can be influenced using the
AT^SCFG
command. This may be necessary, for example, when running tests of
GSM applications, when access to specific radio bands shall be restricted or when the final product is not
intended for operation in certain countries.
Before changing the parameters
<rba>
or
<rbp>
ensure that no network activity occurs. The write command
cannot be executed when making a call, or sending / receiving short messages.
Execution of the write command causes the ME to deregister from and re-register to the network, no matter
whether the selected
<rbp>
or
<rba>
setting really changes. Therefore, it is useful to have the URC "
+CREG
"
enabled. The status of the SIM PIN authentication remains unchanged, eliminating the need to enter the SIM
PIN again after the change.
The parameter
<rba>
is intended to restrict the allowed bands to less than four bands. By default, all four bands
are allowed. Each band not contained in
<rba>
is generally disabled.
All bands of
<rbp>
must be contained in the range set with
<rba>
. The response parameter
<rbc>
will never
show a value outside the
<rba>
range.
<rba>
has precedence over
<rbp>
and
<rbc>
.
The value of
<rba>
may be one of the single bands listed below or all valid combinations from the values 1, 2,
4 and 8. Thus, the value range of
<rba>
is "1".."15". To select or deselect a band calculate the sum of the values
of all desired bands and enter the resulting value. For example, for 1800 MHz (2) and 850 MHz (8) please enter
the value (10).
Parameter
<rba>
is global for the ME, non-volatile and will not be reset by
AT&F
.
“1“ GSM 900 MHz
“2“ GSM 1800 MHz
“4“ GSM 1900 MHz
“8“ GSM 850 MHz
“3“ GSM 900 MHz + GSM 1800 MHz
“5“ GSM 900 MHz + GSM 1900 MHz
“10“ GSM 850 MHz + GSM 1800 MHz
“12“ GSM 850 MHz + GSM 1900 MHz
“15“ all bands
<psm9to>
(str)(+CSCS)
<rba>
(str)(+CSCS)