Dial-out on demand

"Dial-out on demand" means that each poll of a remote is initiated by a command from an easy eXtended Operator Station (ezXOS) computer Controller.

Demand polling may be desirable under the following conditions:

• When commands are being issued to a field device.

• When solar/battery-powered remotes are used, and it is desirable to conserve power.

• When devices/sites are used infrequently or on a seasonal basis.