Specifications

6-24
Reference Guide
Model No.
Running Head
Interface Card User Screens and Settings Interface Card
6.3.6 Interface Card Ports and Functionality
The Interface card controls many critical functions in the system. It provides interfaces to
external control devices, terminates all T1 and E1 WAN links, and holds the nonvolatile RAM
and the internal modem. Table 6-8 lists the interface ports and functions. Figure 6-12 shows
the component layout and labels the ports.
Table 6-8. Interface Ports and Function
Figure 6-12. Component Layout for the INF+M T1E1*8 and INF T1E1*8 Interface Card
Interface Ports Function
Modem Connects the internal modem to a phone line.
Node Provides contacts to report ACO alarms
Control Terminal Connects the system to a VT-100 compatible terminal.
Computer Connects a local device for printing alarms; or to NMS.
T1/E1 WAN link Connects the system to T1 and E1 lines.
Power
Bus
Edge
Connectors
DB-9 Serial Port
VT-100 Control Terminal
Nodal Port
Amphenol Connector
for WAN Connections
Modem Line
(no modem on 8921)