NEC Univerge SV8100 Features And Specifications Manual page 134

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Hierarchical Class of Service Control

ARS allows or denies call route choices based on an extension ARS Class of Service. This allows

lower Classes of Service (e.g., 1) to access routes unavailable to higher Classes of Service (e.g.,

16). The system provides up to 16 (0=unrestricted, 1~16) ARS Classes of Service.

Separate Routing for Selected Call Types

To provide unique control, you can program separate routing instructions for:

Directory assistance (411, 1411 and 555) calls

Emergency (911) calls

Separate Routing for Equal Access (1010XXX) Calls

Choose different routing for directly-dialed (1010XXX + 1) and operator-assisted (1010XXX + 0)

Equal Access calls.

Basic ARS Operation

When a user places an outside call, ARS analyzes the digits dialed and assigns one of 400 Selection

Numbers to the call. The Selection Number chosen depends on which digits the user dialed. ARS then

checks the time of day, the day of week and the extension ARS Class of Service. Based on these call

routing options, ARS selects a trunk group for the call and imposes the Dial Treatment instructions (if

Class of Service Option Allows Outgoing Calls to Not Follow Access Map

Using this option allows a Class of Service to be set so that ARS does not follow the trunk access map

settings (Program 14-07-01 and Program 15-06-01). The feature allows an extension user to have CO

line keys on their telephone which allow incoming access only. The user has only outgoing access on the

CO lines when using ARS to place a call.

Class of Service Matching

With the ARS Class of Service Match Access feature, you can determine whether the system should

allow a call based on the COS assigned to the Dial Analysis Table (Program 26-02). This change can be

used to create a tenant-like application. It then uses the trunk group defined in the Additional Entry in

Program 26-02-03 to place the outgoing call.

When this feature is enabled, the calls are routed in sequential order, and are allowed if the Class of

Service for the trunk group matches.

For this feature, Program 26-01-06: Automatic Route Selection Service, COS Match Access is

UNIVERGE SV8100

Automatic Route Selection