Specifications
L506 Hardware Design 
Copyright©  Shanghai  Mobiletek  Communication  Ltd                                                              52 
(GSM/WCDMA 
/TD-SCDMA/EVDO/LTE) 
Idle 
Software is active. Module is registered to the 
GSM/WCDMA/TD-SCDMA/EVDO/LTE network, andthe 
module is ready to communicate. 
(GSM/WCDMA 
/TD-SCDMA/EVDO) 
taking 
Connection between two subscribers is in progress. 
In thiscase, the power consumption depends on 
network settings such as DTX off/on, FR/EFR/HR, 
hopping sequences, antenna. 
(GPRS/EDGE/WCDMA/TD 
-SCDMA/EVDO/LTE)Sta
ndby 
Module is ready 
forGPRS/EDGE/WCDMA/TD-SCDMA/EVDO/LTE 
data transfer, but no data is currently sent or 
received. Inthis case, power consumption depends 
on network settings and EDGE/HSPA+ /LTE 
configuration. 
(GPRS/EDGE/WCDMA/TD 
-SCDMA/EVDO/LTE)Dat
a transfer 
There isGPRS/EDGE/WCDMA/TD-SCDMA/EVDO/LTE 
data transfer in progress. In this case, power 
consumptionis related to network settings (e.g. 
power control level); uplink/downlink data rates 
and GPRS configuration (e.g. used multi-slot 
settings). 
Minimum mode 
AT command “AT+CFUN” can be used to set the module 
to a minimumfunctionality mode without removing 
the power supply. In this mode, the RF 
part of the module will not work or the USIM card 
will not be accessible, orboth RF part and USIM card 
will be closed, and the serial port is still 
accessible. The power consumption in this mode is 
lower than normal mode. 
Flight mode 
Use the "AT + CFUN = 7" command or lower FLIGHTMODE 
pins, the module can be configured to flight mode 
under without removing the power supply condition. 
In this case, the RF part does not work, but still 
can  use  the  serial  port  and  USB,  the  power 
consumption is lower than normal working mode. 
Power off 
Through the "AT + CPOF" command or lower PWRKEY pin 
can power off L506. At this mode, the module of 
internal  power  supply  will  be  closed,  and  the 
system is stop running also. The UART and USB are 
unavailable. 
Sleep mode 
In sleep mode, the module power consumption to a 
minimum, but the module is still able to receive 
paging information and SMS. 










