You can use contact closure to control up to two electrical devices remotely. With contact closure, you can dial feature access codes on a telephone to activate, deactivate, or pulse electrical devices such as electrical door locks. You can also activate and deactivate contact closure using CLI commands. You can only use feature access codes if you configure the Branch Gateway to use a server with CM software.

It is recommended that you use an Avaya Partner Contact Closure Adjunct™ for contact closure. For more information, see Overview for the Avaya Branch Gateway G430. An Avaya Partner Contact Closure Adjunct™ contains two relays, one for each electrical device. You can control each relay in any of the following ways:

• When you dial the contact closure open access code, the relay opens (no contact)

• When you dial the contact closure close access code, the relay closes (contact)

• When you dial the contact closure pulse access code, the relay closes (contact) for the pulse duration and then opens (no contact)

• You can control each contact closure relay manually with CLI commands or with the Branch Gateway