Z100-TYPE HARDWARE
Figure 2-96. Ground Start Key Installation
Installing External Ringing
Requirements
Figure 2-97 shows the connections for external ringing. External ringing is provided by a
device, such as a gong, chime, or bell, connected to an information outlet. The switch side of
the cross-connect field is connected to a TN742 or TN769 Analog Line circuit pack located in
a port carrier. The TN742 or TN769 circuit pack contains a maximum of eight ports.
The maximum number of devices that can be connected to one TN742 or TN769 circuit pack
port can not exceed 3 ringer equivalences.
Installation
1.
2.
3
4.
5.
6.
Determine port assignment of Trunk Answer From Any Station (Call Answer
From Any Voice Terminal) feature from Console Parameters Form:
EXAMPLE: Port Number B
02 01
Carrier Slot Circuit
Install patch cord at cross-connect field.
Mount ringing device at location specified on External Ringing Device Worksheet.
Run 2-pair line cord (modular plug at one end) from information outlet to ringing
device (see Figure 2-97).
Connect red (R) and green (T) leads to ringing device.
Administer per AT&T System 75 and System 75 XE Implementation and AT&T
System 75 and System 75 XE Administration.
2-137
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