Virtual Facilities Troubles - AT&T Network Adapter 25 Installation And Maintenance Manual

P r o c e d u r e s :
1. Make sure that the appropriate ZTN79 CP is translated.
2. Check for the presence of -48 volts at test point on front of cabinet.
Symptoms:
display-equipped voice terminal when LOCAL button is
Inoperative
used.
P r o c e d u r e s :
1. If LOCAL button/lamp
activate LOCAL button.
2. If terminal is still inoperative, check for other problems.

Virtual Facilities Troubles

Refer to Figure 4-12 for assistance in clearing virtual facilities troubles.
is off, and voice terminal is inoperative,
MAINTENANCE
4-85