Avaya 4424LD+ - Manual (Page 4)

Dial tone (steady tone)
You can make a call.
Busy (slow repeating tone)
The phone you are calling is busy.
Fast busy (fast repeating tone)
No lines are available.
Error (alternating high-low tones)
You dialed or used a feature incorrectly.
Confirmation (double break in dial tone followed by steady
tone)
You used a feature correctly.
Callback (5 short beeps)
Call Waiting (1 or 2 beeps)
You have an inside call (1 beep) or an outside call (2 beeps)
waiting for you.
Your Telephone
Tones
Rings
1 long ring
Inside call.
1 short ring and 1 long ring
Outside call.
1 long ring and 3 short rings
Outside call transferred to you or a call you transferred
returning to you.
1 beep each minute
Call on hold reminder tone.
A line or pool you selected, or an extension you called, is busy
and the system is putting your call into the callback queue.