VoIP Implementation

Office Telephone Systems


Class of Service

The type of service provided to each subscriber can be defined using a “class of service” (cos). Since there are always groups of subscribers with similar needs (such as large voice mailboxes, long message retention periods, or permission to use features like Outcalling), it is convenient to create unique service classes that can be assigned to the specific groups. These classes of service can be thought of as packaged sets of permissions and preferences that can
be assigned to certain subscribers.

Video Conferencing
Business Telephone Systems
Avaya Business Telephone Systems

Up to 12 custom classes of service may be created. The DEFINITY AUDIX system is shipped with 12 identical COS screens, each filled in with the same default values. The system
administrator simply changes those values to create unique classes of service. The screens include a field for naming the classes also.

These classes of service make it easy for the administrator to add a subscriber to the system. The administrator simply specifies the number or name of a class of service on the
Subscriber screen.

One default class of service is delivered with the system.

The class names on the screens can be listed using the display cos command.

Whenever the system administrator changes an attribute on a COS screen, all subscribers with that class of service are automatically updated.

The primary purpose of this feature is to make subscriber administration simple. The administrator need only specify class 1, for example, instead of specifying all the detailed permissions and preferences that implies for each subscriber.


Class of Service

Partner Telephone System |Phone Equipment



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