User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-737HYB-LINE (Hybrid Line)
10
Figure 10-34. Hybrid Station Interactions
This section refers only to the HYB-LINE (Hybrid Line) maintenance that is
performed. Please note that the HYB-LINE (Hybrid Line) maintenance is closely
related to, and interacts with, the HYB-BD (Hybrid Line circuit pack) maintenance
in some instances. Some of the results of maintenance testing of the Hybrid Line
may be affected by the health of the Hybrid Line circuit pack. This interaction
should be kept in mind when investigating the cause of reported Hybrid Line
problems.
There are instances in this section where "service states" of a station are
mentioned. It is helpful to understand what is meant by the different service
states that may exist. An explanation of these service states follows:
■ Out-of-Service–The port, and thus the station, have been removed from
service. A busyout of a port causes it to be out-of-service.
■ Ready-for-Service–Once a port on the circuit pack has been put into
service, the voice terminal must communicate that it is present. The time
between these two events is the time when the terminal is in the
ready-for-service state.
■ In-Service–Once the system has received a message from the voice
terminal communicating that it is present, the station is put into the
in-service state. The terminal can also be forced into the in-service state if
it goes off-hook while it is in the ready-for-service state.
PBX
PORT
(1)
VOICE
TERMINAL
HYBRID LINE
(8)
PORT
VOICE
TERMINAL
HYBRID
CIRCUIT
PACK
LINE