Panasonic KX-NS500 Pc Programming Manual page 754

13.4 PBX Configuration—[5-4] Optional Device—External Relay
Feature Guide References
2.18.4 External Relay Control
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
13.4 PBX Configuration—[5-4] Optional Device—External Relay
PC Programming Manual References
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Optional Device & Other
Extensions— External Relay Access
Feature Guide References
2.1.2.2 Internal Call Block
2.18.4 External Relay Control
754 PC Programming Manual