Power consumption
Table 32: Avaya 3900 sets power consumption
on page 136 shows the power consumption
for the Avaya 3900 Series Digital Deskphones.
Table 32: Avaya 3900 sets power consumption
Avaya 3901 Avaya 3902 Avaya 3903 Avaya 3904
Avaya 3905
Idle
29.3
37.3
42.5
31.5
15.02
H/F
Nominal
45.7
48.7
37.5
H/F
Maximum
64.3
59.7
46.4
DBA Idle
39.29
15.31
DBA H/F
Nominal
45.9
DBA H/F
Maximum
52
2 KBA Idle
33.42
14.98
Note:
Units of measurement are milli-amps (ma). The Avaya 3905 uses a switch mode power
supply and the Avaya 3904 uses a linear power supply. When a handset is off-hook with
maximum volume, the current increases 2 to 5 ma using linear power supply and 1.5 ma
on the Avaya 3905 using switch mode power supply.
Line engineering
Avaya 3900 Series Digital Deskphones use twisted pair wiring on transmission lines. The
maximum acceptable loop length is 1067 m. (3500 ft.), assuming 24 AWG (0.5 mm) standard
twisted wire with no bridge taps. A 15.5 vdB loss at 256 kHz defines the loop length limit. Longer
lengths are possible, depending on the wire's gauge and insulation.
Caution:
Use only the line cord provided with the telephone. A line cord designed for another
telephone can cause damage to the equipment.
Environmental, power, and safety considerations
136 Avaya 3900 Series Digital Deskphones User Guide
August 2010
Summary of Contents for Communication Server 2100
Page 8: ...New in this release 8 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 26: ...Feature keys 26 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 36: ...Avaya 3901 Digital Deskphone 36 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 50: ...Avaya 3903 Digital Deskphone 50 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 58: ...Avaya 3904 Digital Deskphone 58 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 66: ...Avaya 3905 Digital Deskphone 66 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
Page 76: ...Hardware options 76 Avaya 3900 Series Digital Deskphones User Guide August 2010 ...
