Specifications

15
RxLev: The strength of the received signal (in dBm), normally between -55 and -90 - the
signal drops at RxLevAm
When comparing RxLev's, remember the logarithmic nature of the dB scale and
that the signal intensity decays by a factor of 4 when the distance from the BST is
doubled (assuming line of sight to the BST, the signal will drop 6 db when the
distance is doubled.)
RxLevAm: Receive signal strength cut off point (around -100 dBm and -110 dBm).
BCC: Broadcast Color Code (0 through 7)
NCC: Network Color Code (0 through 7)
MSTxPwr: BTS transmit power in dBm (see notes on power control)
C1: Measurement of the signal quality (bit failure). A forced handoff will be made if
C1<0. ( I have seen C1 as high as 039). This value is reported from MS back to the
BSC which decides when to make a handoff.
RxLevFull: C1 value with continuous transmission from tower.
RxLevSub: C1 value with discontinuous transmission from tower.
RxQualFull: Bit error rate with continuous transmission from tower.
RxQualSub: Bit error rate with discontinuous transmission from tower.
Timeslot: The current timeslot (0 through 7). TDMA allows eight channels to be
accommodated on a single RF carrier.
TimeAdv: Timing advance (0 through 63). TA can be multiplied with 547 meters (35 km/64
TA steps) to get the distance to the BTS.
PwrLev: Shows which power step/level the phone is transmitting at (see section below on
power control)
DTX: Discontinuous transmission, a feature used to save battery and reduce network
traffic.
MCC: Mobile Country Code. 238=Denmark
MNC: Mobile Network Code. 1=Tele Denmark, 2=Sonofon (these are the ones for the
MCC 238).
LAC: Local Area Code. (not sure, but I could imagine it being the BSC identity).
CellID: A unique number that identifies the cell. (BTS identity)
T3212: Time between periodic network updates. Appears to be fixed (010 for Tele
Denmark and 050 for Sonofon).
POWER CONTROL:
To minimize co-channel interference and to conserve power, both the mobiles and the Base
Transceiver Stations operate at the lowest power level that will maintain an acceptable signal quality.
Power levels can be stepped up or down in steps of 2 db from the peak power for the class down to a
minimum of 13 dBm (20 milliwatts).
Use this table to translate between dBm, PwrLev, and Power:
Power
Level
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
dBm 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13|
Watts 16 12.
8
8 5.2 3.2 2 1.3 0.8 0.5 0.3
2
0.2 0.1
3
0.0
8
0.0
5
0.0
3
0.0
2|
If you can help out with deciphering the readouts, additional sequences or corrections please feel free
to contact Janus Krarup at [e-mail].