User's Manual

New Product Requirement
Asiatelco Technologies Co. Proprietary/Confidential
1 Introduction
The MC891G is a self-contained vehicle tracking device that combines GPS location with
CDMA connectivity.
Logically, the ION appears to a user or a server application as a single endpoint device. It can
be queried, updated and configured either through a serial connection, or an over the air
CDMA IP connection, or through SMS messaging. The MC891G presents itself over these
connections as an enhanced cellular modem with attached functional elements. These
elements include:
 GPS location engine
 2 General Purpose Bidirectional I/O (GPIO) pins
 1 Relay drive pin output
 Serial UART port
 Input voltage monitor (optional)
 Tim e rs
 Watchdog lockup protection (Dedicated watchdog circuit is optional)
 Fa ct o ry load option for motion detection
Access to these elements and general purpose interfaces is done through an extended AT
command set as defined herein.
Application scene:
T
his product will be designed based on the VIA CBP8.2 CDMA 1X 800M&1900M Baseband
chipset, which includes GPS functionality, ARM CPU and CDMA protocol. This baseband
external connection 256M serial flash, CDMA 800M/1900M/GPS RF Transceiver, and RF
Front end circuit.
The device will use one dual band antenna（CDMA800&CDMA1900）and one dedicate GPS
antenna.
Internet
Server
(IP)
Server
(SMS)
IP
CDMA
Network
OTA
ION-X
GPS
Car