WM_MKT_Fastrack_UGD_001 - 002
September 2002
2.2.2
Audio interface
The audio interface is available through the serial and control cable using a headset.
Electrical characteristics of the audio interface are available in the following table.
Table 6: Audio interface characteristics
For GSM 900/1800 and GSM 900/1900
Min Typ Max Unit
Microphone input voltage @ minimum gain
43.8 mVrms
Speaker output voltage @ maximum gain
1.65 Vrms
Speaker Impedance
32
Ω
2.3 GSM features
Fastrack modem is GPRS Class 2 capable. Following table lists the features of the Fastrack
modem.
Table 7: Features of Fastrack modem
MODE
DESCRIPTION
Audio
Half Rate / Full Rate / Enhanced Full Rate
Accessories (options): handset and car-kit
Standard
Dual Band Extended GSM900 MHz
Class 4 (2W) and GSM 1800/1900 MHz Class 1 (1W)
Interface
Serial interface RS232 V.24/V.28 Autobauding function
AT command set based on V.25ter and GSM07.05 & 07.07
SMS
Mobile Originated (MO) and Mobile Terminated (MT)
Mode Text & PDU point to point. Cell Broadcast
In accordance with GSM 07.05
Data
Asynchronous 2400, 4800, 9600 and 14400 bps.
Transparent and Non Transparent mode
In Non Transparent Mode only: 300, 1200, 1200/75 bauds/
Mode 3.1 KHz (PSTN) and V110 (ISDN)
Fax 2400/4800/7200/9600
bps
GSM teleservice 62 in transparent mode
Class 2
Group 3 compatible
GPRS
Class 2
Coding schemes: CS1 to CS4
Compliant with SMG31bis
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