Ericsson 50 - Manual (Page 65)

VISIBLE SIGNALS
63
BusinessPhone 250 / BusinessPhone 50
Standard Telephone / Economyplus Telephone
VISIBLE SIGNALS
GENERAL
The key lamps on your telephone indicates with different
signals the traffic state of the ongoing call or function.
LAMP INDICATIONS
Extinguished lamp The function is not active.
Steady light The function is active.
Slowly flashing lamp The line (or function) is
put on hold.
Rapidly flashing lamp An incoming call or
message waiting.
Light with short breaks Ongoing call.