Telematrix DC640 User Manual
Page 33
PREDIALING FEATURE
When p rogrammed, th e t elephone supports a pre -dialing f eature f or c alls
made on the Primary Directory Number, or the line corresponding to Feature
Key 1 (directly above t he Spea ker key). The p re-dial feature all ows u sers to
enter a number b efore li fting the hands et or using the he adset or speaker-
phone for an outgoing call. The user can enter up to 20-di gits, which are di-
aled i f t he u ser l ifts t he h andset or p resses t he Headset On/Off or Speaker
keys within 12-seconds of dialing the last digit.
33
RELEASE KEY FEATURE
The
“RLS” ( RELEASE) key i s a h ard l ine b reak. Wh en p ressed t he ke y
automatically di sconnects an e xisting ac tive li ne. T here i s no di al to ne af ter
the
“RLS” key is pressed.
To use, simply press the
“RLS” key when a conversation is complete.
VOLUME CONTROL
(Ring, Speaker, Headset, Handset)
The SpectrumPLUS
TM
DC-550 is equipped with an ADA/FCC compliant volume
control located on the front of the phone.
To adjus t the v olume, press the r ight e nd of the
“VOLUME” key and t he
volume is increased. When the left end of the
“VOLUME” key is pressed, the
volume is decreased.
The
“VOLUME” key is a sixteen-step volume control.