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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Architecture
Page 1-3Protocols
1
Background tests are performed by software maintenance, usually on an
hourly basis. These tests are nondestructive and can be run during high
traffic periods without interfering with calls.
■ Scheduled
Background tests performed by software maintenance, usually on a daily
basis, are generally more thorough than periodic testing. The tests are
considered destructive and are run only during off-hours so as not to
interfere with calls.
■ Fixed interval
Background tests performed by software maintenance at regular time
intervals (these intervals cannot be administered). These tests run
concurrently with periodic maintenance. The following table lists the MOs
that run fixed interval testing.
Demand tests are also run by the system when it detects a need or by
maintenance personnel in trouble-clearing activities. Demand tests include
periodic tests plus other tests required only when trouble occurs. Some
nonperiodic demand tests may disrupt system operation. In this book,
destructive (service-disrupting) tests are identified in boldface type.
Maintenance personnel can use the management terminal to initiate the same
tests that the system initiates. The terminal screen displays the test results.
Protocols
This section describes the protocols handled by the system and the points where
these protocols change. Figure 1-1
is a pictorial guide through data-
transmission state changes. Figure 1-1
illustrates the flow of data from DTE
equipment, like a terminal or host, through DCE equipment, like a modem or data
module, into a communications port on the system. The data flow is shown by
solid lines. Below these lines are the protocols used at particular points in the
data stream.
Not shown in the Figure 1-1
is the treatment of D-channels in ISDN-PRI and
ISDN-BRI transmissions. PRI and BRI D-channels transport information elements
Maintenance Object
Interval
(minutes)
POWER 60
SPE-SELEC 60
STBY-SPE 120
TDM-BUS 10
TONE-PT 10