Please find attached a nice example schematic with power supply and little controller chip.

The following feature are supported by EXS62/82, ENS22, BGS1/2, EHS5, ELS3-demo pcb:

modules: EXS62/82, ENS22, BGS1, BGS2, BGS5, EHS5, ELS31, all using small footprint

Power Supply

• External power plug 8-30V
• 5V USB power supply
• LiPo 4.2v battery chargeable from USB and power plug

RS232:

• 115.2kbit/sec COM port connected to STM32F070 controller
• STM32F070 115.2kbit/sec COM port connected to module

USB:

• virtual USB-COM port (STM32F070 controller)      or
• direct module access to EXS62/82, BGS5, EHS5 and ELS3

GSM/HSDPA/LTE antenna:

• on board GSM/HSDPA/LTE ceramic antenna     or
• 2 x SMA connector for GSM / LTE-diversity

Audio

• analogue audio with iPhone plug (BGS2 only)
• DAI/PCM connector

other

-Micro SD-card access for configuration and log data

-GPS with on board antenna (OriginGPS)

-Test button

LED’s for

• Module on/off
• Call activity, (SYNC-LED)
• RING (red), CTS
• SD access (red) (controller GPIO)
• …

1 line pin header for some remaining controller GPIO pins, GND, + 3.3V, + 4.8V

• 2 x Inputs with simple ESD protection