AT&T MERLIN MAIL System Programming And Maintenance Manual page 206

Glossary
Calling Group
A group of extensions that perform a similar function. A Calling Group can be
administered to provide Group Coverage for one or more Coverage Groups. See also
Group Calling, Coverage, and Coverage Group.
Class of Service (COS)
This parameter defines the characteristics of a voice mailbox. Identifies the total
mailbox storage space (0, 5, 10, or 60 minutes), maximum message length (2 or 15
minutes), the type of transfer (Unsupervised, Supervised, or No Transfer), and the
Outcalling permission (permitted or not permitted).
CNG
In the data communications environment, a fax calling tone that indicates that a fax
machine is ready to transmit.
COS
See Class of Service.
Coverage
This feature designates an alternate answering position when the extension called is
busy or does not answer. It is programmed by the MERLIN LEGEND system manager.
Coverage Group
A group of extensions that is programmed to be covered by the same Group Coverage
receiver(s). Individual extensions or a Calling Group (such as the MERLIN MAIL—ML
Calling Group) can be a Group Coverage receiver.
D
Day Greeting
The Automated Attendant Service Greeting that plays during the hours that a company
is open for business. See also Night Greeting.
Delayed Answer
The MERLIN MAIL—ML feature that allows MERLIN MAIL—ML ports to answer a call
after a delay of four rings. See also Immediate Answer.
Dial Plan
The extension assignments for all equipment (voice or data) connected to the
communications system. Also called Numbering Plan.
GL-2