Vertical Communications DSU Telephone User Manual


 
Troubleshooting
Your Telephone
Symptom Possible Cause
INTERCOM light flashing Your messaging is set. Lift handset, then
dial # 02 and hang up.
Station is ringing with ringer off.
MUTE light on MUTE is activated. To cancel, press
MUTE.
Error Tone
(three steady tones)
May occur when incorrect extension is
dialed.
10
GCA70–246 Troubleshooting Your Telephone
Single Line Telephone Station User's Guide 10 – 1