NEAX2400 IPX ISDN Features and Specifications
Page 44 NDA-24311, Issue 1
D-115 Distinctive Ringing - PRI
D-115 Distinctive Ringing - PRIGeneral Description
This feature provides distinctive station ringing patterns so that the user can distinguish between internal and
external incoming calls.
Operating Procedure
No manual operation is required.
Service Conditions
1. Ring for Incoming Internal Calls:
2-second ring
4-second silence
2. Ring for Incoming External Calls:
1-second ring
2-second silence
OR
2-second ring
4-second silence
3. Ringing pattern for CALL BACK [C-1], CALL WAITING - ORIGINATING [C-31], CALL WAITING
- TERMINATING [C-12], or OUTGOING TRUNK QUEUING [O-2] call back:
2-second ring (3 burst)
4-second silence
4. This feature can be assigned per trunk route via system data programming.
5. If an Off-Premises Station (OPX) or denied station is assigned to a station line, an option is available for
that Class of Service to eliminate ringing sign al s.
6. The Distinctive Ringing interruption rates can be optionally selected on a per system basis. In this case,
initialization of the circuit may be required.
7. An option is available on a per trunk group basis to provide one-burst ringing on terminating calls.
8. When calling a third station (THREE-WAY CALLING [T-2], CONSULTATION HOLD - ALL CALLS
[C-17], etc.), the ringing signal to the called station depends on the type of facility (station or trunk) on
hold.