NEAX2400 ICS Business Features and Specifications
Page 280
NDA-24143, Issue 4
I-20 Immediate Ringback Tone
I-20 Immediate Ringback Tone
General Description
IMMEDIATE RINGBACK TONE will be heard by the caller immediately upon determination by the system
that the called station is idle. IMMEDIATE RINGBACK TONE is connected, even if the call occurs during
the OFF portion of the ringing cycle.
Operating Procedure
When a station calls another station or Attendant:
1. The station goes off hook, hears Dial Tone, and dials the desired station or Attendant.
2. IMMEDIATE RINGBACK TONE is returned.
When an Attendant calls another station or Attendant:
1. The Attendant presses an idle loop key and dials the desired station or Attendant.
2. IMMEDIATE RINGBACK TONE is returned.
When a trunk is connected to a station or Attendant:
1. The calling party will hear IMMEDIATE RINGBACK TONE when the source of the Ringback
Tone is the NEAX2400 ICS, as is the case on DID and TIE Line calls.
Service Conditions
1. The initial Ringback Tone is a brief burst, after which the system resynchronizes the Ringback
Tone with the ringing cycle.
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