DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1173PDMODULE (Processor Data Module) TDMODULE (Trunk Data Module)
9
For this test to run, the ‘‘Remote Loop-Around Test’’ field on the Data Module
administration form must be set to ‘‘y,’’ indicating that the data module endpoint
supports the test.
Figure 9-73. Internal Looparound Test
A signaling message is sent through the digital port circuit pack to the data
module, requesting it to enter loop-around mode. A test pattern is then sent from
the TN771 Maintenance/Test circuit pack, over the path illustrated above, and
back to the TN771 where it is checked for consistency.
The test aborts if any of the following local PBX resources are not available: a
digital port on the TN771 (there are two such digital ports, but only one may be
used at a time), two TDM time slots and an idle digital port connected to the data
module.
Digital Line
Circuit Pack
Data
Equipment
Data Module
(MPDM, DA,
MTDM)
G3r PBX
TN771
Maintenance/
Test Circuit
Pack
TDM Bus
