File
7
IMPLEMENTING 4073 GS SMART
HANDSETS
CALL SERVER : MOBILITY
Ed. 04 5/8Réf. 3EH 21000 BSAA
RADIO TEST MODE
Presentation
The terminal software has a "radio test" mode for gauging the radio transmission parameters. This test
mode is restricted to technical personnel: it is essential for coverage studies, or for maintenance ope-
rations on existing sites.
Note: thanks to this function, the 4073 GS Smart can be used with existing coverage tools.
Limitations of radio test mode
The radio test mode is active in idle mode or in communication. The second line of the display is used
for radio measurement values; some of the function keys are rendered inoperative (only the simple call
setup function is maintained).
The available measurement functions serve to monitor handovers performed by the handset, to identify
local base stations and to measure the perceived reception level on the 2 closest base stations. There
is also a new function which provides an objective quality index for any given call in order to validate
the practical range limits.
All 4073 GS Smart terminals include the measurement function; no provision is made for after-sales
re-calibration. Depending on the tolerance of the components, the theoretical maximum variation of
RSSI measurements is +/- 7 dBm between several handsets. In practice, the RSSI measurement varian-
ce over several 4073 GS Smart terminals is generally within +/- 3dBm.
Entering and quitting radio test mode
To enter radio test mode (the handset must already be registered on the system):
- Long press on 'i' to turn off the handset
- Press simultaneously on 'On-hook', 'S' and 'i' until the display starts up (2nd line: "STATE-RSSI-QUA
").
To quit radio test mode:
- Long press on 'i' to turn off the handset
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