MX8000 Installation and Operation Guide
4–20
1 Manual Answer
2 Listen-In Tip
4 Telco Ring
5 Listen-In Ring
6 Manual Answer
3 Telco Tip
Phone Line
Connectors
Figure 4–26: Phone Connector Pin-Out and Listen-in Wiring Diagram
4.7.2 PBX Operation
Prior to performing listen-in functions on a PBX phone line system the receiver must be set up with the
proper listen-in mode and PBX string. Refer to Sections 5.1 and 5.5.2.4 (MX8000–LC3) or 5.5.4.4 (MX8000–
LC1) to properly program the receiver to handle PBX listen-in calls.
4.8 Testing the System
IMPORTANT:
The MX8000 should be tested regularly to ensure complete and proper operation. Reports of
automatic signal receipt must be verified daily. All testing, inspection, and maintenance
must be done in accordance with NFPA 72 requirements.
Because there are so many variations in dialer parameters and phone line conditions, the only way to be
absolutely certain that all subscribers can communicate with the MX8000 is to test every subscriber's dialer
individually. Subscribers must test their communicators every 30 days to make sure the MX8000 receives
the information.
When you install a new MX8000, test every manufacturers' panels for each format. This is necessary
because different manufacturers' panels may operate differently even if all panels use the same format.
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