14169000-IG, Edition 11.0
January 2018, Original document
17
Important Parameters
When deploying, there are 3 parameters which are equally important:
l RSSI values: Value indicating signal strength
l Q value: Value indicating the signal quality (preferably steady at 64)
l Sound Quality: Measured by walking away from the base station with the handset and meas-
ure where the RSSI value drops below 75 and the Q value stays constant at 64.
Example and Description of Values (RPN, RSSI, Quality) (Only relevant to Spectralink
Handset 7202/7212/7522/7532/7622/7642/7722/7742)
Descriptions of the values above:
l RPN (Radio Part Number) values range from 0 - 255.
l RSSI (Received Signal Strength Indicator) values range from 35 - 124. Counting down from
124.
l QV (Quality) values range from 0-64.
A signal quality of 64 is a connection without errors, this number will be reduced by one for
each error (such as reflections or noise). Preferably this value should be steady at 64.
l FTS ( Frequency, Timeslot, State)
o
Time slot values range from 0 to B (there are 12 time slots)
o
State: E = Economy mode active. B, C indicates if last handover was a connection handover or a bearer handover.
Note:
To only see handover type, disable Economy mode in the handset menu (Settings > Advanced > Economy mode).
l First line shows that the actual base station has RPN number 14, signal strength (RSSI) 124,
signal quality of connection is 64, 99C means ninth frequency, time slot 9, and that the last handover was a connection handover (C).
l Last four lines are candidates for connection handover (if any). Only the RSSI value and the
RPN value is shown.
SpectralinkIP-DECT Server 400/6500 and DECT Server 2500/8000 Synchronization and Deployment Guide