Siemens TC65 Specifications download pdf (Page 24)

TC65 Hardware Interface Description

Confidential / Released

TC65_HD_V02.000 Page 24 of 120 08.06.2006

3.1 Operating Modes

The table below briefly summarizes the various operating modes referred to in the following

chapters.

Table 5: Overview of operating modes

GSM / GPRS SLEEP Various power save modes set with AT+CFUN

command.

Software is active to minimum extent. If the module was

registered to the GSM network in IDLE mode, it is

registered and paging with the BTS in SLEEP mode,

too. Power saving can be chosen at different levels: The

NON-CYCLIC SLEEP mode (AT+CFUN=0) disables the

AT interface. The CYCLIC SLEEP modes AT+CFUN=7

and 9 alternatingly activate and deactivate the AT

interfaces to allow permanent access to all AT

commands.

GSM IDLE Software is active. Once registered to the GSM network,

paging with BTS is carried out. The module is ready to

send and receive.

GSM TALK Connection between two subscribers is in progress.

Power consumption depends on network coverage

individual settings, such as DTX off/on, FR/EFR/HR,

hopping sequences, antenna.

GPRS IDLE Module is ready for GPRS data transfer, but no data is

currently sent or received. Power consumption depends

on network settings and GPRS configuration (e.g.

multislot settings).

Normal operation

GPRS DATA GPRS data transfer in progress. Power consumption

depends on network settings (e.g. power control level),

uplink / downlink data rates, GPRS configuration (e.g.

used multislot settings) and reduction of maximum

output power.

POWER DOWN Normal shutdown after sending the AT^SMSO command.

Only a voltage regulator is active for powering the RTC. Software is not active.

Interfaces are not accessible. Operating voltage (connected to BATT+) remains

applied.

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Siemens TC65 Specifications Page 24