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Additional Information 65
GSM Features Supported
CSD technical data
HSCSD Maximum Data Rates (kbps)
The speeds given are maximums, Sony Ericsson cannot guarantee how fast your network
will operate.
Receiver
RF Level
-102 dBm -102 dBm -102 dBm
Receiver
RX Bit
Error Rate
<= 10
-4
(Static Ch.)
<= 3% (EQ50 ch)
<= 10
-4
(Static Ch.)
<= 3% (EQ50 ch)
<= 10
-4
(Static Ch.)
<= 3% (EQ50 ch)
ME SIM Lock Yes
Online Services SIM-AT Class 1b (Class 2 without call control.)
USSD Support is provided via AT commands; No MMI is provided
Speech Coding Not applicable (GC79 does not support speech services)
Standards AT commands industry standard ETSI 07.05, 07.07 and
07.10, V.25ter command set supported
CSD Data Rates 9.6 kbps or 14.4 kbps depending on the GSM network
Compression MNP5 (Increases data rate up to 2x depending on data type)
V.42bis (Increases data rate up to 4x depending on data type)
GSM network support required for compression
Error Correction End to End MNP2 and LAPM (V.42)
RLP
Requires GSM Network support
GSM/ISDN According to V.110 and V.120
9.6 kbps per
timeslot
14.4 kbps per
timeslot
4 + 1 RX 38.4 57.6
TX 9.6 14.4
3 + 2 RX 28.8 43.2
TX 19.2 28.8