Operation Manual

57BusinessPhone – Analog Telephone
Audible Adjustments
Loudspeaker volume
Note: This section only applies to the Ericsson Medium
telephone.
Adjust the speaker volume using the slide switch.
w Slide to change the volume
Ringing signal character
The ringing signal character can be adjusted with two different
characters: bass and treble. Adjust the ringing signal character
using the slide switch.
On the Ericsson Basic telephone:
c Slide to change the character
On the Ericsson Medium telephone:
Slide to change the character
Hearing aid compatibility
Since your telephone has a built-in inductive coupler for the
hard-of-hearing, anyone so desiring can use the telecoil in his/her
hearing aid while telephoning. To do so, simply switch the hearing
aid in the T position.