Cortelco 3690 Benutzerhandbuch

Hearing-Aid Compatible Handset  The handset on your Cen-
turion telephone works with magnetically-coupled hearing aids.

Ringer Volume Control  The 3-position switch (located on the
back of the telephone) is used to set ringer volume. Set control on
the left side for high ring volume or toward the right for low or off.

TONE/PULSE Switch  The TONE/PULSE switch, located on the
back of your telephone, is used to set the type of dialing for your
telephone to match the local service from your telephone company.
The 'P' position is for Pulse dialing service. The 'T' position is for Tone
dialing service. (Some telephone companies cannot accept Tone
dialing.)

Telephone Line Cord Jack   Connect the modular line cord
supplied with your telephone at this jack: long cord for desk
installation; short cord for wall installation.

VISUAL RING INDICATOR  The Visual Ring Indicator will light when
a ringing signal is applied to the telephone.

TONE BUTTON  The tone button is used to change the dialing mode
from pulse to tone during a dialing sequence, when your local
service is set for rotary dial service.

FLASH Button  The FLASH button sends an interrupt signal to the
distant office. The interrupt is a 600-millisecond, timed line discon-
nect which tells the distant office that you wish to use an available
feature. The results of a FLASH signal will depend on the services
you have available.