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A-16
A-16
General Description
This feature automatically routes outgoing on or off-net calls over alternate facilities when the first-choice
trunk group is busy. The user selects the first-choice route by dialing the corresponding access code, and
the equipment then routes the call through alternate trunk groups only if the first is busy. The NEAX2400
ICS will also add or delete digits, when necessary, to complete the call to the desired station.
Operating Procedure
No manual operation is required.
Service Conditions
1.
No indication is provided to a station user as to whether the call is routed over first-choice or
subsequent choice facilities.
2.
STATION MESSAGE DETAIL SYSTEM [S-10] may be used in conjunction with this feature.
3.
The same route can be included in two or more alternative groups.
4.
The total number of routes that can be included in a single route advance group is 15.
5.
The total number of routes that can be contained in the system is all route advance groups is:
•
IMG (ICS), IMGx: 31
•
IMGxh, IMGdxh, MMG (ICS), UMG (ICS): 255
6.
The same route can be included in two or more alternative groups.
7.
The maximum number of trunks to be included in a route is 255.
8.
ALTERNATE ROUTING [A-16] occurs only when the dialed code accesses the first-choice trunk
group in the ALTERNATE ROUTING list.
Interactions
1.
ALTERNATE ROUTING [A-16] may be affected by TOLL RESTRICTION -3/6 DIGIT [T-7]. For
example, two routes of WATS provide the same service but for two separate Route Restriction
Classes (RSC). Stations of one RSC will be allowed to advance to the second WATS route while
the other RSC will not.
2.
If LEAST-COST ROUTING [L-5] is used, ALTERNATE ROUTING is not used. However, they
may be made available in the same system.
3.
ALTERNATE ROUTING provides for no digit translation, therefore, only routes of the same type
may be used. Keep this in mind when coordinating Route Advance groups consisting of DDD
and FX routes.
Page 20
Alternate Routing
Alternate Routing
NEAX2400 ICS Business Features and Specifications
NDA-24143, Issue 4
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