DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1162PDMODULE (Processor Data Module) TDMODULE (Trunk Data Module)
9
Besides being used for data calls between ter minals, computers, and d ata
communications equip ment, data modules also serve as inter faces to equipment
associated with system features suc h as System Administration, Station
Message Detailed Recording, Message Center Service, Automatic Call
Distribution, Distributed Communications System, and Audio Information
Exchange. Maintenance for d ata modules associated with these l atter services
are covered by other maintenanc e objects such as PMS-PRNT, JNL-PRNT, and
PMS-LIN K.
Maintenance of data module s is closely related to and interac ts with Digital Line
circuit pack mai ntenance, and test results for data mod ules can be affected by
the health of the Digital Line circu it pack. Keep this interac tion in mind when
investigating customer- reported problems with d ata modules.
Data modules provide a variety of op tion switches to allow the customer to se lect
data rates, parity, keyboard di aling, local, and remote loop b ack, etc. (The DAA2
Data Adaptor has an AT (Hayes) type interface that allows selec tion of the above
parameters as well as mode — linked or stand-alone.) An incorrect selec tion will
not necessarily cause errors, alarms or test failures, but it can result in servic e
disruption. Refer to the installation manual provid ed with the data module for
more information about those options.
This discussion occasional ly refers to a station’s service state, which is d efined
as follows:
Out-of-Service The port, and thus the data module, have been removed from
service. Causes for this include busyout of the port, removal of the
Digital Line circuit pack and failure of the NPE Crosstalk Test (#9).
Disconnected The port is administered b ut the associated d igital link does not
respond. An administered port is put in a disconnec ted state after a
system reboot or circ uit pack insertion. This state p ersists until a
link-reset-pass message is received from firmware on the circuit
pack.
In-Service When switch software receives a link-reset-pass message from the
port, the port is placed in service. If the link-reset-pass message is
missed, and an off-hook mes sage is received while the port is in the
disconnected state, maintenance software will run an ID request test
and put the port in t o service upon receivi ng a correct resp onse.