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COS Number
Specifies the Class of Service (COS) number. COS programming determines the extensions that are able to
activate relays.
Value Range
1–64
Maintenance Console Location
7.6 [5-4] External Relay
Programming Manual References
4.12
[2-7-1] Class of Service—COS Settings—Optional Device & Other Extensions—
External Relay Access
Feature Guide References
1.1.2.2 Internal Call Block
1.17.10 External Relay Control
764 PC Programming Manual
7.6 [5-4] External Relay