Lucent Technologies 8.2

DEFINITY ECS Release 8.2

Administrator’s Guide

555-233-506 Issue 1

April 2000

Features and technical reference

1169Automatic routing — general

AAR

AAR routes calls over private networks. When a user dials the AAR feat ure access

code (normally 8 in North America) and phone number, AAR selects the least

expensive route for the call in the private network and performs any digit

conversion. If the first-choice route is not available, another route is chosen

automatically.

AAR routes private-network numbers, public-network numbers, service codes, an

international number, operator access code, or an operator-assisted dialing

number. AAR routes calls route as far as possible over the private network, and

then accesses the public network. This saves long- distanc e char ges an d allo ws you

to use your private network as much as possible.

ARS

ARS routes calls over the public network. When a user dials the ARS feature

access code (normally 9 in the US and 0 outside of the US) and phone number,

ARS selects the least expensive route for the call when there are one or more

long-distance carriers or services.

ARS, like AAR, routes private-network numbers, public-network numbers,

service codes, an international number, operator access code, or an

operator-assisted dialing number, and also routes to Int er-e xchange car riers (IXC).

These are your long-distance providers.

You can route ARS calls to a variety of types of public-network and

private-network trunk groups including Central Office (CO), Foreign Exchange

(FX), Integrated Services Digital Network (IS DN), Tie, and Wide Area

Telecommunications Service (WATS). See ‘‘Managing trunks’’ on page 337 for

more information.

AAR and ARS digit analysis default

translations

Your switch contains built-in AAR and ARS Digit Analysis Default Translations.

These default translations are used for call processing whether or not AAR or

ARS is enabled on your switch.

Any 7-digit dialed string that begins with any number 2 through 9 is processed as

an AAR call. Exceptions are listed in the ARS Digit Analysis Default T r anslati ons

Table. The translations shown on the ARS Digit Analysis Default Translations

table are displayed in sorted order (including additions) on each of the 8 possible

ARS Digit Analysis Tables.