BusinessPhone Communication Platform 4.0
Facility Description – General ASB 150 02

## Tone Messages

ASB 150 02 supplies various tone messages as information to users.

As different markets have different requirements with regard both to tone character and also levels and frequencies, there are various configurations of tones.

The following tone messages show the standard tone diagram.

Tone | Character
Dial tone: System ready to accept digits | –––––––––––––––
Special dial tone: System ready to accept digits but telephone has ongoing diversion | ––– ––– –––
Ringing tone: Ring signal is sent to called party | ––– (repeated after 4 s)
Special ringing tone: Ring signal is sent to Line 2 on system telephone | –– –– ( repeated after 4 s )
Busy tone: Called party is busy. | –– –– –– –– ––
Number unobtainable (Vacant) tone: Called number not accessible or is vacant | ––– ––– –––
Blocking (Congestion) tone: Call cannot be executed due to congestion or because called party is blocked | – – – – – – –
Verification tone: Obtained as verification that ordered facility is accessed | ––– ––– –––
Intrusion tone: Sent to all parties when an intrusion takes place | ––– ––– ––– –––
Conference tone: Sent to all participants in a conference | ––– (repeated after 15 s)

Revision: PC1 © Ericsson Enterprise 2003