2.10 Using The External Paging Interface - Comdial DSU II System Manual

IMI66–132

2.10 Using The External Paging Interface

The system provides a special transformer-isolated paging port that you can use to couple the
system to a customer-supplied external paging amplifier. This external paging port does not
provide a talk-back path nor will it recognize DTMF dial tones.
You can use the relay closure dry-contact points that the system makes available at the ringing
port terminal for controlling the external paging amplifier during a paging operation. These
contacts close and stay closed during the time that a paging operation is active to provide a
constant enable signal path for the paging amplifier.
NOTE: This paging enable constant closure function overrides the ring pattern closure
provided when ringing is sent to the paging port.
• Connect the audio input of a customer-supplied external paging amplifier to the paging port.
• If the paging amplifier requires an enable signal, connect the enable leads to the station 17
audible terminals.
1 2 3 4 5 6
Paging Port
Pin 2
Pin 5
J1632 Base Unit
2 – 32 Installing The DSU II Digital Telephone System
Paging Port
J0408 Base Unit
J0816 Base Unit
Connect Audio
Input To Common
Equipment
Paging Port
DSU224
Station 17 Audible Pair
Connecting A Typical External Paging Interface
DSU II Digital Telephone System
Paging Port
PA System
Audio Input
Enable Input
J1 Connector Block
Station 17 Audible Connection for
(J0408 and J0816 Systems)
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CLIP TERMIINALS
DSU224