Out of 17 Ratings

Owner's of the AT&T Conference Phone ATT993 gave it a score of 3.8 out of 5. Here's how the scores stacked up:
  • Reliability

    3.82 out of 5
  • Durability

    3.81 out of 5
  • Maintenance

    3.88 out of 5
  • Performance

    3.76 out of 5
  • Ease of Use

    3.56 out of 5
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Getting started
Connect the handset to the telephone.
Plug the handset coiled cord into the handset jack on the left side of the
telephone. Plug the other end of the handset coil cord into the handset,
then hang up.
Telephone installation
Connect the power adapter.
Fit the power adapter behind the slot at the back of the telephone base.
Then plug the smaller end of the power adapter into the jack labeled 9V
AC POWER on the back of the telephone. Plug the power adapter into an
electrical outlet not controlled by a wall switch.
Check for a dial tone.
Press LINE 1, then lift the handset or press SPEAKER and listen for a dial
tone. Then press LINE 2 and listen for a dial tone. If there is no dial tone,
see Troubleshooting on page 58.
Confirm Lines 1 and 2.
Press LINE 1 and dial one of the telephone numbers. If there is a busy
signal, line 1 is the number you called. If line 2 rings, line 2 is the number
you called.
POWER jack
Power adapter