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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 10-1051PI-LINK (Processor Interface Link)
10
PI-LINK (Processor Interface Link)
NOTE:
Reference lnk-no using the display communication-interface links
command.
The Processor Interface (PI) Communication Link is the physical link that
connects DEFINITY to an adjunct such as AUDIX, another node in a DCS
network, or an ISDN-PRI connection. These links are either X.25 (DCS, AUDIX, or
MIS) or ISDN (ISDN-PRI). The system supports up to four of these links per
TN765 Processor Interface circuit pack. PI-LINK maintenance actually monitors
several hardware devices: Processor Interface ports, TN754 or TN784 Digital
Line ports, PDMs, TDMs, MTDMs, MPDMs, and DS1 facilities. Henceforth, "data
module" refers to either PDM, TDM, MPDM, or MTDM. In much of the following
link documentation, the repair procedures described mention various
hardware configurations. Choose the procedure appropriate to your
configuration.
The Processor Interface circuit pack provides an EIA connection. This
connection can be administered only on Link 1 in a system without High or
Critical Reliability. The EIA port is used when an adjunct (AUDIX, for example) is
near (less than 25 feet) or further if a modem is used. The EIA port can also be
used to connect two PBXs together via DCS. The EIA port cannot be used in a
High or Critical Reliability system.
The Processor Interface Link can be in three different states. These states can be
seen using the status link lnk-no system technician command. If the link is in a
maintenance busy
state, then the system technician had instructed the
Processor Interface to be in maintenance busy by entering the busyout link
lnk-no command or the Processor Interface Link is not established and
maintenance is trying to bring it up. This probably means that an error condition
is occurring somewhere on the link that keeps the link from being logically
connected and carrying data. If the link is busied out, then it can be put back into
service by issuing a release link lnk-no command. This restarts the link. If the
link is for DCS, then it may speed the recovery of the link if busyout link lnk-no
and release link lnk-no are executed on the switch that is establishing the
connection (see the Communication-Interface Links form). The link can be in a
disconnected
state if the link cannot be started up. In this case, maintenance
tries to establish the link periodically. If the link is up and data is being sent
successfully, then the link is in the
in-service
state.
MO Name (in
Alarm Log) Alarm Level
Initial Command to
Run Full Name of MO
PI-LINK MINOR test link lnk-no l Processor Interface Link
PI-LINK WARNING test link lnk-no l Processor Interface Link