Siemens AC75 manual Psm9tostr+CSCS

AC75 AT Command Set

2.14 AT^SCFG

s

<psm9to>(str)(+CSCS)

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.
<rba>(str)(+CSCS)
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

AC75_ATC_V01.002	Page 67 of 569	10/30/06
Confidential / Released