NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
Page 970
NDA-24297, Issue 1
M-42 Multiple Call Forwarding - Don’t Answer - CCIS
M-42 Multiple Call Forwarding - Don’t Answer - CCIS
General Description
This service permits a call to an unanswered station to be forwarded, multiple times, to a predesignated station that
does not have CALL FORWARDING-DON’T ANSWER [C-3] service set, or to the ATTENDANT CONSOLE
[A-3] in a CCIS network.
With existing CALL FORWARDING-DON’T ANSWER [C-3] (CF-D) service:
With MULTIPLE CALL FORWARDING-DON’T ANSWER [M-25] service:
Operating Procedure
1. Station A sets Call Forwarding-Don’t Answer to Station B. Station B sets Call Forwarding-Don’t Answer
to Station C. Station C sets Call Forwarding-Don’t Answer to Station D.
2. A call is directed to Station A. The calling party receives ringback tone, and ringing starts at Station A.
3. The call is not answered within a predetermined amount of time and is forwarded to Station B. Ringing
stops at Station A and starts at Station B.
4. The call is not answered within a predetermined amount of time and is forwarded to Station C. Ringing
stops at Station B and starts at Station C.
5. The call is not answered within a predetermined amount of time and is forwarded to Station D. Ringing
stops at Station C and starts at Station D.
6. Station D lifts the handset and is connected to the calling party.
Call
Ringing
1st Time
CF-D
B
A
S
1st Time
CF-D
2nd Time
CF-D
3rd Time
CF-D
4th Time
CF-D
5th Time
CF-D
6th Ringing
Call
A
B
C
D
E
S
F
5th Ringing
4th Ringing
3rd Ringing
2nd Ringing
1st Ringing