DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-817EXP-INTF (Expansion Interface Circuit Pack)
9
This test requires that the Expansion Interface circuit pack first be busied out. If
the system has a duplicated Port Network Connectivity, this test cannot be run on
an Expansion Interface circuit pack that resides on the current active PNC due to
restrictions that prohibit the busying-out of certain components that are part of
the active PNC. If this test is run on an Expansion Interface circuit pack that is
part of the Standby PNC, this test is not destructive and no service outages will
take place.
In a system without duplicated Port Network Connectivity, where this Expansion
Interface circuit pack supports a PPN to EPN link, this test will disrupt service to
one EPN (Direct Connect) or all EPN s (Center Stage). If the Expansion Interface
circuit pack is part of an EPN to EPN link in a Direct Connect system, service
between the two EPN s will be disrupted.
This is a two part connectivity test. In the first part of the test, a digital count is
transmitted from the cabinet of the Expansion Interface circuit pack under test,
through the Expansion Interface circuit pack under test, out to its lightwave
transceiver. The connection then loops back into the lightwave transceiver
through the same Expansion Interface circuit pack again and into the originating
cabinet. If the test tone is detected by a tone detector, the first part of the test
passes. The path used for this part of the test is represented in Figure 9-44
.
In the second part of the test, a data packet is sent from the TN1655 Packet
Interface circuit pack to the Expansion Interface circuit pack under test, the
packet is looped back through the lightwave transceiver and is sent back to the
Packet Interface circuit pack. If the Packet Interface circuit pack receives the
same packet it transmitted, the second part of the test passes. If the entire test
has passed, the Expansion Interface circuit pack, its backplane wiring and the
electrical portion of the lightwave transceiver are healthy.
The path used for this test if the Expansion Interface is located in the PPN is
represented in Figure 9-45
. The path used for this test if the Expansion Interface
is located in an EPN is represented in Figure 9-46
.
When the Expansion Interface circuit pack under test is in an EPN, the data
packet must also pass through the Active Expansion Interface circuit packs and
the Active DS1 CONV circuit packs (and the Active Switch Node Interface circuit
pack(s) in a Center Stage Switch system) of the Active PNC link connecting the
EPN to the PPN.
This test requires the Expansion Interface circuit pack to ignore incoming data
from its neighbor Expansion Interface circuit pack or Switch Node Interface
circuit pack. Thus this test will disturb any inter-port network connections that
currently exist over the link provided by the Expansion Interface under test and
its neighbor and disrupt signaling between the two circuit packs.
