General Product Description M20; Fig. 3-1 Design Of The Siemens M20 - Siemens M20 Terminal Technical Description

Siemens Information and Communication Products
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General product description M20

The Siemens M20 combines all the features required by developers and users. It is designed both for handling complex
industrial applications such as telemetry, telematics or communication, and for integration in stationary or mobile fields
all over the world.
The most important features are:
• Top quality according to "normal mobile station" requirements (–104 dBm sensitivity) instead of "small mobile
station" requirements (–102 dBm sensitivity).
• Voice transmission with Enhanced Full Rate EFR and Full Rate FR
• Data transmission rate up to 9600 bit/s transparent and non-transparent
• Group 3 fax service
• SMS (text mode, PDU, MT, MO) and SMS Cell Broadcast
• Integrated echo suppression and noise reduction for handset
• Digital audio interface
• SIM Lock
• Network and service provider personalization according to GSM 02.22
• Reloadable software
• GSM900 phase II
• Compatible in terms of function and control with the GSM modules M1 and A1
• 2W power part (class 4)
• Single input voltage (6.0 V)
Average current: speech mode 200mA/idle mode 20mA
• Dimensions L x W x H in mm: 86.8 x 41.4 x 11.2.
• Weight: 38 g
• Temperature range: –20°C to +55°C
Note: Voltage supply: Voltage supply on connection must NOT rise faster than 3V/msec.
Additional features are listed below.
In addition to control via the serial interface, the Siemens M20 also offers the option of control by means of a connected
keypad and display.
Using a board-to-board connector, the system integrator can integrate the components on the basic device's printed circuit
board (e.g. hand-held devices like scanner).
All the main connections are already integrated in the Siemens M20 so that implementation can take place with only mi-
nimum development work.
Mounting holes
Fig. 3-1 Design of the Siemens M20
Version 8 dated 15.03.00
General product description M20
80 pole
SMD connector
Space for
SIM card reader
Antenna connector
A
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