MONITOR MODE

The Siemens S4 series have a Monitor mode that can be activated directly from the standard user keypad. In order to activate this mode, you must enter the special access code currently programmed into the phone.
TO ACTIVATE MONITOR MODE:
Menu, 9 (Phone Options), 7 (Phone Status), Left Display Button (left MENU key), 7684666, Hang-Up Button (Red Handset key)
Now "Monitor" should appear at the bottom of the Network Options menu.
Pressing the right Display Button when in monitor mode will show a list of the six cells with the strongest signals.

Test Mode Indicators: (* = only available when call in progress )

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CH Channel Number

RX Signal Strength (dB)
N NCC (Color Code)
B BCC (Color Code)
CI Cell ID (in Hex)
C1+ how long before phone does forced hand over. (see RX and RXAM)
LAI Location Area Identity. Display Network ID code (42F010 = 240.01) and MSC
TXPWR Transmit Power (dB)
RXAM Reeceive signal strength cut-off point
TS* Time Slot Number
TA* Timing Advance. Distance from tower in Km X 2
PL* Power Level

Power Table

PL: 5 6 7 8 9 10 11 12 13 14 15
dB: 33 31 29 27 25 23 21 19 17 15 13
Watts: 2 1.3 .8 .5 .3 .2 .13 .08 .05 .03 .02

LF* C1 value with continuous transmission from tower
LS* C1 Value with discontinuous transmission from tower
QF* Bit Error Rate with continuous transmission from tower
QS* Bit Error Rate with discontinuous transmission from tower

BER (bit error rate) table
QF/QS register: 0 1 2 3 4 5 6 7
% of bit sent: 0.2 0.8 0.4 1.6 3.2 6.4 12.8 25.6