Mitel 5540 IP Console - User Guide
Class of Service/Restriction
Each extension and trunk has a COS (Class of Service) and a COR (Class of Restriction) that defines what the user of that extension or trunk can or cannot do. The system can have up to 96 of each, although most companies use only a few.
To help you answer questions from users who may be having problems with the system, you may want to record a brief description of the most common COSs and CORs. For example, COS 1 might mean, “Allows only local calls,” and COR 10 might be, “No long distance calls after 6 PM.” Your communications department can give you the required details.
COS
COS NAME
ALLOWS...
COR
COR NAME
RESTRICTS...
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