a) MOS (Mean Opinion Score) - Audio quality index for an end-to-end call. Average values were obtained for each call and at each terminal involved.
b) Routed Calls - Telephone calls successfully established by the network and between the two terminals in question (?the call reached the called terminal?).
c) Non-routed Calls - Telephone calls not established by the network between the two terminals in question (?the call did not reach the called terminal?).
d) Calls Abandoned During Conversation - Telephone calls successfully set up by the network but abandoned during the conversation phase.
e) Calls with Normal Release - Telephone calls successfully set up by the network and which ended as expected.
f) Reasons Why Calls Were Abandoned - Situations leading to call abandonment: no service, congestion, radio link failure, other.
g) Level of RSSI (Received Signal Strength Indication, in dBm) Signal - Indication of the signal strength received by the mobile terminal.
h) Geographic Co-ordinates - Correspond to the places where measurements were made.
