Bogen UTI312 - Manual (Page 9)

9
Trunk Disconnect
The UTI3
12 includes a Trunk Disconnect feature.The purpose of the Trunk Disconnect feature is to release the
UTI3
12 from the trunk port in the event a user does not hang up the phone properly after making a page. If the
UTI3
12 does not detect voice for the interface VOX time-out period, or if the interface default timer expires, the
UTI3
12 will attempt to release from the trunk. When using the Trunk Disconnect feature, the PBX must have
disconnect supervision available on the trunk port being used.The Trunk Disconnect feature is disabled by default.
To set the VOX and default timers and enable the feature, refer to System Programming.
PBX Page Port Contact
In this configuration, the unit responds to a contact shorting the closure source to its return. When the short is
removed, the page ends. Audio is provided to the system through a separate pair of dry audio input leads.
Make sure that the power is disconnected and all other connections are completed before proceeding. Move the
slide switches on the UTI3
12 to the positions shown below. Use a modular telephone cord to connect the module
to the phone system.
The center two conductors are used for dry audio (no DC voltage) and the connectors on either side are
connected to the page port contact closure. The maximum resistance of the page port contact closure loop
resistance is
1000 ohms. Open collector type outputs may also be used for controlling a page.The Trunk Disconnect
feature is not available in this mode.
PBX Page Port VOX
In this configuration, the unit activates when audio on the page input is detected. Loss of audio allows the VOX timer
to expire and ends the page.
Make sure that the power is disconnected and all other connections are completed before proceeding. Move the
slide switches on the UTI3
12 to the positions shown below. Use a modular telephone cord to connect the module
to the phone system. The center two conductors are used for dry audio and are not polarity sensitive. The Trunk
Disconnect feature is not available in this mode.
Note:The default time-out is factory set to 30 seconds, and the VOX time-out is set to 6 seconds. If both the default and VOX
timers are inhibited, there is no way to release the system from the page port VOX.