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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-412DATA-CON (Network Control Driver)
10
DATA-CON (Network Control Driver)
The TN777B Network Control circuit pack contains the following objects: the
SW-CTL (Switch Control), four DATA-CHLs (Data Channels), the DATA-CON
(Network Control Driver), and the generic hardware that interfaces with the TDM
Bus (DATA-BD). The DATA-CON (Network Control Driver) is the subject of this
section. The DATA-CHLs (Network Control Channels) are also described.
Together the four DATA-CHLs and the DATA-CON provide a data
communications interface that allows DTE equipment connected to port circuit
packs to communicate with software applications running on the system. The
DATA-CON represents the interface to the control channel of the TDM Bus. Each
DATA-CHL represents a dial-up/dial-out asynchronous communication port that
interfaces to the TDM Bus. The DATA-CON supports the signaling required to
establish and tear down a connection between the terminal equipment and a
software application. Data is transported between the terminal equipment and
the software over the connection established over the DATA-CHL.
A system with a single SPE has a single Network Control circuit pack. Thus, there
is a single DATA-CON. A High or Critical Reliability system has two Network
Control circuit packs, one in each of the two SPEs. Thus, there is a DATA-CON
on the Network Control circuit pack that resides in the Active SPE control carrier
and a DATA-CON on the Network Control circuit pack that resides in the Standby
SPE control carrier. Refer to Chapter 6, "Reliability Systems: A Maintenance Aid",
and the STBY-SPE (Standby SPE) Maintenance documentation for discussions of
High and Critical Reliability systems.
From an external (user) point of view, the DATA-CON is not directly accessible
via a system technician command; that is, there is no object command word that
represents it. Instead, the DATA-CON is tested under the guise of the
DATA-CHLs that it controls. The test data-module <ext> [short | long]
command tests the DATA-CON along with the DATA-CHL designated by <ext>
but all Test Results are associated with the DATA-CHL Maintenance Name.
From an internal (system software) point of view, the DATA-CON uses the same
set of tests as the DATA-CHLs. Therefore, the DATA-CON assumes the same
Error Type and Aux Data values as the DATA-CHLs in the Hardware Error Log. It
is also alarmed at the same Alarm Level (that is, MINOR, ON BOARD) in the
Alarm Log. In both logs, the Maintenance Name is DATA-CON.
MO Name (in
Alarm Log)
Alarm
Level Initial Command to Run Full Name of MO
DATA-CON MINOR none Network Control Driver