DSX Access System, Inc. algo 8028, Manual

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Algo 8028 SIP Doorphone
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In a wet application, relay contacts are powered by the built-in 24 VDC/300mA auxiliary power supply or
by a customer-provided auxiliary supply. In these applications, it is required that current flow through the
contacts to the connected device for proper operation.
The maximum capacity of the 8028 Control Unit relays is 1A@30 VDC.
• Push to activate with timed deactivation. A keyset user presses a soft key to activate the relay, and the relay
automatically deactivates after a programmed interval.
• Push to activate with push to deactivate operation. A keyset user presses a soft key to activate the relay, and
then presses another soft key to deactivate it.
The equipment you connect to a control relay must be compatible with the applications and relay specifications
stated in the 8028 SIP Doorphone Installation and User Guide .
8028 SIP Doorphone Alerts
The DSX system uses Ring Groups to control doorphone alerts. When a visitor at the door presses the doorphone
call button, the doorphone will alert (chime or ring) all the extensions in the Ring Group to which the doorphone
belongs. For example, if doorphone 402 and extensions 301 and 302 are in Ring Group 1, pressing the call button
alerts 301 and 302.
If the DSX keyset being chimed or rang has a backlit display, the backlight will turn on when the chime begins.
During the chime, the keyset display will show:
Chime from xxx
(xxx = the doorphone extension number or
name) to indicate which doorphone is calling. If the chime or ring is unanswered, the backlight will remain on for
the 1605-06: Door Alert Timer [System: Timers: Features: Control (1605): Door Alerting] on page 22 Door
Alert interval. See Programming for this Feature for more on the Door Alert interval.