Avaya Definity SI, Maintenance Manual, Page: 2039 / 2968

PI-SCI (System Communication Interface)
Issue 4 May 2002 10-1253 555-233-123
PI-SCI (System Communication
Interface)
!
WARNING:
The “test interface long” command resets the PI-BD and causes all
ISDN-PRI and BX.25 links to come down.
The PI-SCI (System Communication Interface) MO is used to put the TN765
Processor Interface circuit pack into a state such that BX.25 (DCS, AUDIX, etc.)
and ISDN links can be established. The TN765 Processor Interface circuit pack
has downloadable firmware. It is the responsibility of PI-SCI to download the
firmware to the TN765 circuit pack during initialization. Failures while
communicating with the TN765 circuit pack are logged against the PI-SCI MO.
There can be up to two SCIs. There is a one-to-one correlation of PI-SCI to
Processor Interface circuit packs. In a High or Critical Reliability system, there can
be four Processor Interface circuit packs, but only two on the same carrier are
active at any one time. If errors against the SCI can be related to the Processor
Interface circuit pack, then the circuit pack MO is alarmed (PI-BD). See also
PI-LINK (Processor Interface Link) and PI-BD (Processor Interface Circuit Pack)
Maintenance documentation.
When investigating BX.25 (DCS, AUDIX, etc.) and ISDN link problems, resolve
PI-SCI errors initially, since they might clear up the Processor Interface link
problems.
MO Name (in
Alarm Log)
Alarm
Level
Initial Command
to Run
1
1 Where P is the port network number (1 for PPN only); C is the carrier designation (for
example, A or B for processor complex circuit packs); and S is the address of the slot in
the carrier where the circuit pack is located (for example, 1 or 2 for Processor Interface
circuit packs 1 or 2).
Full Name of MO
PI-SCI
2
2 For additional repair information, see also PI-BD (Processor Interface Circuit Pack)
Maintenance documentation.
MAJOR test interface PCS System Communication Interface