Lucent Technologies 8.2 Benutzerhandbuch

Issue 1

April 2000

Features and technical reference 

1300

Call-by-Call Service Selection 

A UAP allows the customer to set the following options:

■

Maximum number of trunks that each service can use at any given 
time.The sum for all services may exceed the total number of trunk-group 
members. For example, for a15-member trunk group, you could administer 
a maximum of seven MEGACOM service calls, six MEGACOM 800 
service calls, and eight SDN calls. This ensures that all trunk-group 
members are not dominated by a specific service, yet allows for 
fluctuations in demand.

■

Minimum number of trunks that always must be available for each service. 
The sum for all services may not exceed the total number of trunk-group 
members. For example, for a 10-member trunk group that provides access 
to MEGACOM service, MEGACOM 800 service, and SDN, the minimum 
number of trunks to be used for each of these services cannot add up to 
more than 10.

When these UAP limits are exceeded, the system rejects the call, even if a trunk is 
available. On outgoing calls, the calling party receives a reorder tone unless other 
preferences are available.

You can assign either fixed or scheduled UAP for each Call-by-Call Service 
Selection trunk group.

■

With a fixed UAP, one plan applies at all times.

■

With a scheduled UAP, different plans can be administered to apply at 
different times of day and different days of the week. As many as 6 
activation times and associated plans can be assigned for each day of the 
week.

You can have anything from a simple fixed UAP to a very flexible UAP with many 
scheduling options. You can even start out with no UAP and build one as the need 
arises.

Call-by-Call Service Selection provides special incoming call-handling treatment 
for ISDN trunk groups. An incoming call on an ISDN trunk is handled according 
to a treatment table administered for the trunk group. Depending on the platform 
you use, the table allows for a different number of combinations of call treatments. 

The treatment for an incoming call is selected based on the first 3 columns in the 
ICHT table on the ISDN Trunk Group screen. When the attributes of an incoming 
call match these specifications, the call is treated according to the corresponding