L
OW
C
OST
GSM M
ODEM
Both single band and dual band antenna can be used for TMAS GSM/GPRS Terminal as long as it comes with
the SMA (male) connector.
3
Operating Modes
The table below briefly summarizes the various operating modes of the TMAS GSM terminal
Mode
SLEEP
Function
Various power saving modes set by AT+CFUN command.
Software is active to minimum extent. If the Terminal was registered to the GSM
network in IDLE mode, it remains, in SLEEP mode, registered and pageable from
the BTS.
Power saving can be chosen at different levels. The NON-CYCLIC SLEEP mode
(AT+CFUN=0) disables the AT interface. The CYCLIC SLEEP mode AT+CFUN=5,
6, 7 and 8 alternatively activate and deactivate the AT interface to allow permanent
access to all AT commands.
Software is active. Once registered to the GSM network, paging with BTS
Is carried out. The Terminal is ready to send and receive.
Connection between two subscribers is in progress. Power consumption depends
on network coverage individual settings, such as DTX off/on, FR/EFR/HR, hopping
sequences, antenna.
GSM IDLE
GSM TALK
3.1 Status LED
A red LED displays the operating status of the terminal.
The table below summarizes the coding of the red LED status
Operating status
Power Down
Not registered to the net (missing SIM, PIN, net)
Standby (registered to the net)
Sleep mode (Power save mode, registered to the net)
Talk mode, GPRS data
LED
Off
Fast Blinking
Slow Flash (75ms On / 3s Off)
Off
On
DS-GSMT35I-2
Oct ’07
www.rfsolutions.co.uk
©2007
REG No 277 4001, ENGLAND.
Page 6
RFSOLUTIONS [ RFSOLUTIONS.LTD ]
