Output Signal Control Pin - Huawei MG323 Hardware Manual

HUAWEI MG323 GSM M2M Module
Hardware Guide
Figure 3-5 shows the connections of the TERM_ON and RESET pins.
Figure 3-5 Connections of the TERM_ON and RESET pins

3.5.3 Output Signal Control Pin

The MG323 module provides a network status LED pin LED_STATUS. The pulse
signal output through this pin controls the status LED on the user interface board to
display the network status.
Different blinking modes of the status LED indicate different network status. Table 3-4
describes the status of the LED_STATUS pin.
Table 3-4 Status of the LED_STATUS pin
Working or Network Status
Sleep mode
Network-searching or non-network
status (including the case when the
SIM card is not inserted and the case
when the PIN number is unblocked)
Registered with a 2G network
GPRS data service
Voice call
Issue 04 (2011-08-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
Output Status of the LED_STATUS Pin
A low-level signal is output continuously.
A high-level signal is output for 0.1s in a
period of 1s.
A high-level signal is output for 0.1s in a
period of 3s.
A high-level signal is output for 0.1s in a
period of 0.125s.
A high-level signal is output
continuously.
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