Avaya B159 User Manual page 33

Avaya B159 Conference Phone
Relative humidity
Recommended acoustic conditions
Approvals
Telecommunication
EMC
Electrical safety
TECHNICAL SPECIfICATIoNS
20–80% condensation free
Reverberation period: 0.5 S Rt 60
Background noise: 45 dBA
TBR21, 47 CFR Part 68/TIA, IC CS-03 Issue 1999/01/01
EN301 489-1,3. EN 300 220-1,2, FCC subparts B and C
UL 60950-1, EN 60950-1:2001
User Guide
29