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T300/T302
White Paper, August 2002
53
Instant messaging/ Chat
Performance and technical characteristics
MMS User Agent will report problems to user
in case of:
• message not sent causes no user subscription to
service, if included in ResponseText (please see
WAP209)
• message not sent causes required functionality
not supported by MMS Relay/Server, if included
in ResponeText (please see WAP209)
• message not sent causes insufficient credit (in
case of prepaid charging), if included in Respone-
Text (please see WAP209)
Feature Support in the T300/T302
Support of instant messaging No
Chat application Yes, SMS as the radio bearer.
Dimension GSM 900/E-GSM
900
GSM 1800 GSM 1900
Frequency range TX: 880 — 914 MHz
RX: 925 — 959 MHz
TX: 1710 — 1785
RX: 1805 — 1880
TX: 1850 — 1910
RX: 1930 — 1990
Channel spacing 200 kHz 200 kHz 200 kHz
Number of channels 174 Carriers *8
(TDMA)
374 Carriers *8
(TDMA)
299 Carriers *8
(TDMA)
Modulation GMSK GMSK GMSK
TX Phase Accuracy < 5º RMS Phase
error (burst)
< 5º RMS Phase error
(burst)
< 5º RMS Phase
error (burst)
Duplex spacing 45 MHz 95 MHz 80 MHz
Frequency stability +/- 0.1 +/- 0.1 +/- 0.1
Voltage operation (nominal) 3.6 Volts 3.6 Volts 3.6 Volts
Transmitter RF power output 33 dBm Class 4 (2W
peak)
30 dBm Class 1 (1W
peak)
30 dBm Class 1 (1W
peak)
Transmitter Output
impedance
50
Ω 50 Ω 50 Ω
Feature Support in the T300/T302