SimCom SIM5300E

SIM5300E_Hardware_Design_V1.02
37
HIGH
LOW
Idle
RI
120mS
Receive SMS
URC
Figure 35: RI behavior of URC or receive SMS
However, if the module is used as caller, the RI will remain high. Please refer to the following figure.
HIGH
LOW
Idle
Ring
Establish
the call
Hang up
the call
Idle
RI
Figure 36: RI behavior as a caller
4.13 NETWORK STATUS INDICATION
The NETLIGHT pin can be used to drive a network status indication LED. The status of this pin is listed in
following table:
Table 18: Status of the NETLIGHT pin
Status
SIM5300E behavior
Off
SIM5300E is not running
64ms On/ 800ms Off
SIM5300E not registered the network
64ms On/ 3000ms Off
SIM5300E registered to the network
64ms On/ 300ms Off
Communication is established
A reference circuit is recommended in the following figure: