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HUAWEI MG323 GSM M2M Module
Hardware Guide
Description of the Application Interfaces
Issue 04 (2011-08-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
3 Description of the Application Interfaces
3.1 About This Chapter
This chapter mainly describes the external application interfaces of the MG323
module, including:
B2B Connector Interface
Power Interface
Power-On and Power-Off Time Sequence
Signal Control Interface
UART Interface
SIM Card Interface
Audio Interface
3.2 B2B Connector Interface
The MG323 module uses a 50-pin B2B connector as its external interface. For details
about the model and dimensions of the B2B connector, see “6.3 Dimensions of the
B2B Connector."
Figure 3-1 shows the sequence and definitions of pins on the 50-pin B2B signal
interface of the MG323 module.
Figure 3-1 Sequence and definitions of pins on the B2B signal interface
1 2
49 50