2.18.4 External Relay Control
Description
By 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 a
preprogrammed length of time. When this timer expires, the relay turns off automatically. This gives the PBX
simple control over other equipment, allowing an extension user to, for example, activate an alarm from his
extension.
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 card
To connect an external relay to a legacy gateway (® 5.3.1 Stacking Connection), refer to the
documentation of the legacy gateway.
• The port of the DOORPHONE card to which the relay is connected must be assigned through system
programming as a relay port (not a door opener port).
• Some devices may be unable to communicate correctly with the PBX. Confirm compatibility with the
manufacturer of a device before installing it.
• Each external relay port has a COS assigned. This and the COS of an extension determine the extension
users who can use External Relay Control.
• The length of time that a relay is turned on can be specified separately for each relay through system
programming.
• If the same or another extension tries to access an external relay that has already been switched on, the
timer for that relay is reset.
Installation Manual References
4.7.1 DOORPHONE Card (KX-NS0161)
4.9 Connecting to a Doorphone, Door Opener, and/or External Sensor
PC Programming Manual References
9.30 PBX Configuration—[1-1] Configuration—Slot—DOORPHONE Card—Card Property—
For Output -
Device Type
10.6.1 PBX Configuration—[2-6-1] System—Numbering Plan—Main—Features— External Relay Access
10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Optional Device & Other
Extensions— External Relay Access
13.4 PBX Configuration—[5-4] Optional Device—External Relay
Feature Guide References
5.1.1 Class of Service (COS)
User Manual References
1.11.2 If an External Relay is Connected
Feature Guide 197
2.18.4 External Relay Control
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