NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
NDA-24297, Issue 1
Page 835
Call Forwarding - Busy Line - CCIS C-46
Service Conditions (cont’d)
b.) Station A calls station B. Station B is call forwarded - CCIS to Station C. Station C is call
forwarded - CCIS to Station D. Call forwarding does not occur to Station D. If Station C is idle,
Station C will ring. If Station C is busy, busy tone is returned from Station C. CALL BACK -
CCIS [C-44], CALL WAITING-TERMINATING [C-12], or EXECUTIVE RIGHT-OF-WAY -
CCIS [E-8] can be set from Station A to Station C.
c.) A Central Office call is directed to Station B. Station B is call forwarded to Station C. Station C is
call forwarded to Station D. Call forwarding does occur to Station D. If Station C is idle, Station
C will ring. If Station C is busy, Station D will ring.
D
Node B Node A
C B A
CALLING STATION
CALL FORWARDING-BUSY LINE SET
IDLE
CALL FORWARDING IS SET, BUT FORWARDING DOES NOT OCCUR
CCIS NETWORK
NEAX2400 NEAX2400
B C D
Node B
Node A
CO Call
CCIS NETWORK
NEAX2400 NEAX2400
CALLING STATION
CALL FORWARDING-BUSY LINE SET
IDLE