DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123 Issue 1
April 1997
Maintenance Object Repair Procedures
Page10-412DATA-CON (Network Control Driver)
10
DATA-CON (Network Control Drive r)
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 req uired 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 Na me.
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, O N 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