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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-923PDMODULE, TDMODULE (Data Module)
10
Figure 10-75. Internal Loop Around Test
A signaling message is sent through the digital port circuit pack to the data
module under test to request it to enter loop around mode. A test pattern is then
sent from the SPE through the Network Control circuit pack (Netcon), over the
TDM Bus, through the digital port circuit pack, to the data module where the
message is looped around, and sent back through the digital port circuit pack,
the TDM Bus, the Network Control circuit pack, and to the SPE where it is
checked for consistency.
This test aborts if no terminal or communications equipment is connected to the
data module. It also aborts if a number of local PBX resources are not available.
These resources include a network control channel from the Network Control
circuit pack (there are a maximum of four channels administered as Netcon-type
data modules), two TDM time slots (one for each direction of the loop around
message), and an idle digital port circuit associated with the data module under
test. Failure to allocate any of these resources causes the test to abort with a
specific error code for that resource.
A "yes/no" parameter on each data module (MPDM, MTDM, or stand-alone DA
only) administration form is required to specify if the Data Module remote Loop
Around Test is supported by the data module endpoint. If the parameter is "n"
(no), the test does not run.
DIGITAL
LINE
CIRCUIT
PACK
TDM
BUS
DATA MODULE
(MPDM OR MTDM)
DATA
EQUIPMENT
NETCON
CIRCUIT
PACK
"DEFINITY" COMMUNICATIONS SYSTEM