NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
NDA-24297, Issue 1
Page 899
Direct-In Termination - CCIS D-74
D-74 Direct-In Termination - CCIS
General Description
This service feature allows Inter-Office Direct-In Termination for a case where an incoming call addressed to a
station in a PBX from a C.O. line is to be terminated to a station belonging to a different PBX in the CCIS network.
Operating Procedure
1. A DIT call terminates to Node A.
2. The DIT call terminates to Node B through CCIS and rings station B in Node B.
Service Conditions
1. Bothway trunks can be used for DIRECT-IN TERMINATION, but incoming only trunks are
recommended.
2. It is not necessary to order special DID trunks as is required with DIRECT INWARD DIALING [D-8].
However, care should be exercised in the application of central office trunk hunting.
3. If the called party is busy, the following conditions apply:
a.) When the call is directly terminated, the call will ring until the called station becomes idle or the
call is forwarded to an attendant according to the system data.
b.) In case of the call terminated via tandem connection (the call is originated from C.O. line and
CCIS line is intermediate interface), the call waits for a certain time and tries to terminate to the
destination (the call is not forwarded to Attendant Console irrespective of the system data).
ATT
DIT CALL
DIT TRUNK
STN (a)
[Node A]
CCIS
[Node B]
STN (b)
PUBLIC
SWITCHED
TELEPHONE
NETWORK
RBT RG
ATT
DIT TRUNK
STN (a)
[Node A]
CCIS
[Node B]
STN (b)
PUBLIC
SWITCHED
TELEPHONE
NETWORK