User Guide

PAMS
Technical Documentation
NME–3
General Information
Page 3
Issue 1 10/99
Introduction
The CD 949 is a fixed carphone consisting of 3 Main units.
S GSM transceiver – carries the main phone, it consists of
a 8W GSM–transceiver, power supply, HF circuit and a
SIM–Card reader for a big simcard,
S Handset– The handset carries a large Display, key
board, earpiece and microphone and a SIM–Reader for
a small simcard.
S Cradle – holds the handset and carries a magnet
for Hook On/Off detection in the Handset.
For Downlink HF audio, 2 outputs and1 Power amplifier drive a
Loudspeaker and 1 Lineout signal to use the cars entertainment system.
For modem applications it is also possible to operate the GSM
Transceiver without the cradle and the handset.
GSM Transceiver
The GSM Transceiver is the main part of the Product and carries the main
GSM radio; it has 3 Connectors:
1. RF connector (GSM antenna)
2. Data Connector (Laptop)
The features of the GSM Tranceiver are listed below
1. Class 2 (8W) phase GSM 900 transceiver
2. Power supply
3. Support of ignition sense and backlightdimming signals
4. Delivery of Carradiomute and Antenna motor control signals
5. High Quality Handsfreeaudio (car enviroment)
6. Poweramplifier for 4W Handsfree Loudspeaker
7. Support of active Handsfree microphone according to VDA
standard
8. Delivery of lineout signal to use the Car radio’s amplifiers and
Loudspeakers for Handsfree
9. SIM reader for large SIM–Card
10. RS–232 interface for Laptop connections (At commands)
11. Connection to Handset (via system cable)
12. Car data interface for remotecontrol and Data applications