Gsm Modules And Sim Cards; Introduction Of Main Chipset - OpenVox G400P User Manual

G400P User Manual
are D8 and D9, under normal circumstances, they are lit when powered
and D9 flashes more quickly than D8.

2.4 GSM modules and SIM cards

G400P supports 2G and 3G module, M20 is 2G module and WCD100 is
3G module, please go to here for modules' detail information. One GSM
module supports one SIM card and one antenna, please plug a SIM card
into the back of a GSM module and activate it. For more details, please
refer to figure 3.

2.5 Introduction of main chipset

Designed for global market, M20 is quad-band GSM/GPRS engine that
works on frequencies, GSM/GPRS 850/900/1800/1900 MHz.
With a tiny configuration of 35mm × 32.5mm × 2.95 mm, M20 can fit
almost all the space requirement in your application, such as smart phone,
PDA phone, Car Phone, Wireless PSTN, and other mobile devices.
The M20 provides RF antenna interface. Customer's antenna should be
located in the customer's main board and connect to module's antenna
pad through micro strip line or other type RF traces whose impendence
must be controlled in 50Ω.
The M20 is integrated with the TCP/IP protocol，Extended TCP/IP AT
commands are developed for customers to use the TCP/IP protocol easily,
12
OpenVox Communication Co. LTD. URL: www.openvox.cn
http://ArtTel.ru