Nortel 7430 Deployment Manual

Also see for 7430: User guide

16Example: 1.9 GHz - USA8 Channels.Distance > 25 metres(Free sight)16 Channels.8 Channels.Example: 2.4 GHz12 Channels.Distance > 80 feet/25 metres(Line of sight)24 Channels.12 Channels.3.4 Signal Performance Measurement3.4.1 Q ValueThe Q-value is an expression for the bit failure rate in the communication between the BaseStations and the handset. The highest possible Q-value is 64. At this value there is no bit failuresmeasured and should provide excellent speech quality. As the wireless handset roams thecoverage area the Q-value will change. When the wireless handset registers a Q-value of 52equal to 12 bit failures measured, the wireless handset will request a handover to an alternativeBase Station/Repeater or eventually to another channel - frequency/timeslot.Be aware that the information in the display is only updated once per second, which means thatthe number of bit failure can be lower /higher than indicated in the display.Therefore it is important to accept that as soon as significant fluctuation of the Q-valueoccurs the end of the radio coverage has been reached.NN40110-304 1.1