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L-25
General Description
This feature allows a station to dial a Public Switched Telephone Network (PSTN) call and has the capability of
looking ahead to seven directly-connected nodes in the CCIS network for an idle trunk.
Operating Procedure
1.
Lift the handset; receive dial tone.
2.
Dial the access code; receive second dial tone.
3.
Dial the PSTN number.
4.
The system completes the call by checking all available routes in the network specified by system
programming.
Service Conditions
1.
The PBX can look ahead to a maximum of seven directly-connected CCIS nodes.
2.
A maximum of eight routes at each node, directly connected to the calling node, can be checked by the
calling office.
3.
This feature is used in conjunction with LEAST-COST ROUTING-3/6 DIGIT [L-5].
4.
Stations may be restricted from using this feature by CLASS OF SERVICE INDIVIDUAL [C-15].
5.
The maximum number of adjacent CCIS links for each system is 32.
Interactions
LEAST-COST ROUTING [L-5] is used in conjunction with outgoing C.O. calling. The seven-system limitation of
LOOK-AHEAD ROUTING - CCIS is based on the eight route advances available in the AOPR command. This
results in seven systems for seven route advances. The eighth route is reserved for DDD off-net access to ensure the
completion of the call.
Programming
STEP 1:
ASYD - System Data 1, Index 186, Bit 0. Is Link Reconnection in service? 0/1: No/Yes.
STEP 2:
ASFC - Allow SFI 1 for stations using LOOK-AHEAD ROUTING - CCIS. Allow CDN 9:TQ for the
overflow routes and also for the LCR flag route. (Do not allow for CCIS voice or data route.)
If a station in Office A calls a station in Office B, and that station is forwarded to a station in Office C,
the call will go directly to Office, bypassing Office B (in a fully associated network).
NEAX2400 IPX Feature Programming Manual
NDA-24297, Issue 1
Look Ahead Routing - CCIS
Look Ahead Routing - CCIS
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L-25
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