2.18.4 External Relay ControlDescriptionBy turning external device relays on and off, the PBX can control external devices such as alarms.When an extension user enters the External Relay Control feature number, the specified relay turns on for apreprogrammed length of time. When this timer expires, the relay turns off automatically. This gives the PBXsimple control over other equipment, allowing an extension user to, for example, activate an alarm from hisextension.If the relay cannot be accessed (for example, because use is not permitted by COS, or the port is not in service),a reorder tone will be heard at the extension.Conditions• Hardware Requirement:An external relay device and a DOORPHONE cardTo connect an external relay to a legacy gateway (® 5.3.1 Stacking Connection), refer to thedocumentation of the legacy gateway.• The port of the DOORPHONE card to which the relay is connected must be assigned through systemprogramming as a relay port (not a door opener port).• Some devices may be unable to communicate correctly with the PBX. Confirm compatibility with themanufacturer of a device before installing it.• Each external relay port has a COS assigned. This and the COS of an extension determine the extensionusers who can use External Relay Control.• The length of time that a relay is turned on can be specified separately for each relay through systemprogramming.• If the same or another extension tries to access an external relay that has already been switched on, thetimer for that relay is reset.Installation Manual References4.7.1 DOORPHONE Card (KX-NS0161)4.9 Connecting to a Doorphone, Door Opener, and/or External SensorPC Programming Manual References9.30 PBX Configuration—[1-1] Configuration—Slot—DOORPHONE Card—Card Property— For Output -Device Type10.6.1 PBX Configuration—[2-6-1] System—Numbering Plan—Main—Features— External Relay Access10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Optional Device & OtherExtensions— External Relay Access13.4 PBX Configuration—[5-4] Optional Device—External RelayFeature Guide References5.1.1 Class of Service (COS)User Manual References1.11.2 If an External Relay is ConnectedFeature Guide 1972.18.4 External Relay Control
