Lucent Technologies 555-230-024 User Manual

Features

555-230-024

Issue 5    January 1998 

Provides an efficient way to use trunking facilities. It allows you to continue to try 
to reroute an outgoing ISDN-PRI call that is not completing. When DEFINITY ECS 
receives a cause value that indicates congestion, Look Ahead Routing tells the 
system what to do next. For each routing preference, you can indicate if the next 
routing-preference should be attempted or if the current routing-preference 
should be attempted again.

Modifies the number you dial so an AAR or ARS call can route over different trunk 
groups that may terminate in switches with different dial plans. Subnet Trunking 
inserts digits, deletes digits, pauses, and/or waits for dial tone in digit outpulsing, 
as required, so calls route:

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To or through a remote switch

■

Over Tie trunks to a private network switch

■

Over CO trunks to the serving CO

Subnet Trunking is required on calls routing to or through a remote switch, 
regardless of the call’s destination.

Provides the most economical routing of ARS and AAR calls. This routing is 
based on the time of day and day of the week that each call is made. Up to 8 
TOD routing plans may be administered, each scheduled to change up to 6 
times a day for each day in the week.

This allows you to take advantage of lower calling rates during specific times of 
the day and week. In addition, companies with locations in different time zones 
can use different locations that have lower rates at different times of the day or 
week. This feature is also used to change patterns during the times an office is 
closed in order to reduce or eliminate unauthorized calls.