Siemens TC35i - Manual (Page 16)

TC35i Terminal Hardware Interface Description
Confidential / Released
TC35i_T_HD_v01.05 Page 16/37 10.07.2003
3.4 Operating modes
The table below briefly summarizes the various operating modes referred to in the following
chapters.
Table 3: Overview of operating modes
Mode Function
SLEEP Various power saving modes set by AT+CFUN
command.
Software is active to minimum extent. If the Terminal
was registered to the GSM network in IDLE mode, it
remains, in SLEEP mode, registered and pageable
from the BTS.
Power saving can be chosen at different levels. The
NON-CYCLIC SLEEP mode (AT+CFUN=0) disables
the AT interface. The CYCLIC SLEEP mode
AT+CFUN=5, 6, 7 and 8 alternatingly activate and
deactivate the AT interface to allow permanent
access to all AT commands.
IDLE Software is active. Once registered to the GSM
network, paging with BTS is carried out. The
Terminal is ready to send and receive.
Normal operation
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.
Power Down Operating voltage applied. Only a voltage regulator in the Power Supply ASIC
is active for powering the RTC. Software is not active. The RS-232 interface
is not accessible.