Sony Ericsson TT4031 (SE-GM29) - Manual (Page 38)

Owner’s Manual Rev 1.0 Page 38 of 38
3.4 Operating States/LED
The modem has a green LED, as depicted below, which is used to indicate
various operating states. These states are described in following table.
Operating State LED Status
After switching on the modem On after 4 s
Switch off (Power down) or power removed Off
Standby or talk Flashing
No network, network search, no SIM card, no PIN
entered
On
Switch off (Power Down): DC power is applied but the
modem is switched OFF.
Standby: The TT4031 (SE-GM29) is switched ON and camped on to the
network. No call in progress.
Talk: The TT4031 (SE-GM29) is switched ON and a voice/data call is in
progress.