4.0

Out of 28 Ratings

Owner's of the AT&T Telephone 1040 gave it a score of 4.0 out of 5. Here's how the scores stacked up:
  • Reliability

    3.96 out of 5
  • Durability

    4.07 out of 5
  • Maintenance

    4.12 out of 5
  • Performance

    4.04 out of 5
  • Ease of Use

    3.9 out of 5
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Appendix I
Technical specification
Operating temperature 32°F — 122°F
0°C — 50°C
Power adapter input AC120V 60Hz
Power adapter
output
DC12V 500mA
Backup battery
(purchased separately)
Alkaline 9V, size 1604A
Headset jack 2.5mm, 32 - 150ohm
Wiring limitation No more than 600 feet
REN
0.3B
System signal carrier
frequency
1.7 MHz