GSM9000 RF Solutions, GSM9000 Datasheet - Page 26

• Manufacturer Part Number: GSM9000
• Description: Tri-band Wireless Module Supporting Both GSM And GPRS
• Manufacturer: RF Solutions

Specifications of GSM9000

• No. Of Channels: 2
• Frequency Rf: 1.8GHz
• Module Interface: Serial, UART
• Kit Contents: Module Board Docs
• Tool / Board Applications: Wireless Connectivity-ZigBee, RF, Infrared, USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Product Description
Huawei GTM900 GSM/GPRS Wireless Module
5.3 Software Upgrade of GTM900
5.4 Data Services of GTM900
5.5 Services Presentation Diagram of GTM900
II. Powering down GTM900 in emergencies
Through AT commands, the external CPU powers off GTM900 directly.
GTM900 supports software upgrade. You may upgrade the software of GTM900 over
the serial interface. For detailed operations, see the operation manual.
The data services provided by GTM900 are transmitted over the serial interface. See
Figure 5-2 for the network access of GTM900.
Figure 5-2 Data services of GTM900
For the downlink data,
For the uplink data, the process is similar. However, when providing data services,
GTM900 does not process other AT commands delivered by external equipment.
See Figure 5-3 for the services presentation diagram of GTM900.
PC
GTM900 transmits the data received from the network to the external CPU over
the serial interface.
The CPU then forwards the data to external data terminals, for example,
computers.
UL data at 9.6 kbps
DL data at 38.4 kbps
External
Interface
board
CPU
Huawei Technologies Proprietary
interface
Serial
5-2
G
M
T
9
0
0
Chapter 5 Operating Process