The MC820 has a built in Netmonitor. Without any software cables or what so ever it is possible to enable this netmonitor. Please see page about various information how to enable it.
Below you can find an overview of all MC820 netmonitor parameters.

CURRENT CELL

CH:0678

Current channel

TS:0

Time slot

RM:5

Root Mean Square

TX:0

NIY

RX:52

Receiver signal strength

C1:+49

NIY

BA:14

BCCH Allocation

BSIC:01

Base Station Identity Code

CI:6C23

Cell ID in HEX, so 6C23 = 27683

LAI:204 20 4E37

Country code (204) and provider code (20), also in hex?

NEXT CELL

CH:0664

Channel ID

RX:49

Signal Strength

RM:5

Root Mean Square

C1:+42

NIY

FN:+15170

NIY

HBN:+1864

NIY

STAT.2

NIY

WHILE CALLING

CH:0678

Current channel

TS:3

Time slot

PL:9

NIY

TA:1

Time advance: 0 = 0-550m, 1 = 551-1100m etc

RX:49

Receiver signal strength

RQ:0

Received signal quality

TYP:TC

NIY

DTX:0

NIY

RFBCCH:0678

Broadcast control channel

RxBCCH:49

BCCH receiver signal strength

BSIC:01

Base Station Identity Code

CM33

NIY

CI:6C23

Cell ID in HEX, so 6C23 = 27683

RL:20

NIY