2.10 Using The External Paging Interface - Comdial G0408 Manual

Digital Telephone System

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.
Typical Common
Equipment
2 – 32 Installing The DSU
Connect Enable
Input To Station 17
Audible Terminals
If Enable Is Required.
Barrier Strip
(G1632 System)
Figure 2–14: Connecting A Typical External Paging Interface
Paging
Port
PA System
Audio Input
Enable Input
IMI66–107
J1 Connector Block
(G0408 and G0816 Systems)
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