TANGO
VERSION 1.04
This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission.
Page 22
2.1.9.6
Interface F (Optical indicator interface)
The actual state of the TANGO is displayed by two LED’s on interface F of
the unit (for more details see chapter
Figure 7:
Status indicator of modem
2.2
Functional description
The GSM/GPRS modem TANGO is a mobile station for the transmission of
voice, data and fax calls as well as SMS in GSM/GPRS networks.
The GSM/GPRS modem TANGO consists of the following components:
•
GSM/GPRS transceiver
•
Power supply unit
•
Serial link (V.24) for data transmission and control
•
GPRS Class B, class 2 or class 10.
If the GSM/GPRS modem TANGO is registered in the network, it acts just
like a regular fax/data modem. To control the GSM modem there is an
advanced set of AT-commands according to GSM ETSI 07.07 and 07.05
implemented. The two LED’s on the top of Interface C are showing the state
of TANGO. The yellow LED signals the actual connection of the modem
(interface B or C) and the green LED signals power connection,
GSM/GPRS network, a “RESET” function and “SOFT-ON ” procedure.
The actual state of the TANGO is displayed by two LED’s at the connector
on the top of interface C of the unit.
•
Green, Yellow off:
Modem is switched off.
•
Green light:
Power on, not registered in the
network.
•
Green flashes:
Power on, registered in the network.
•
Green flashes quickly:
Call in progress.
•
Yellow off:
Power off or interface C in use.
•
Yellow light:
Power on, interface B in use or both
interfaces (B & C) are not connected.
