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,’’ indic ating that the data module end point
supports the test.
Figure 9-73. Internal Looparound Test
A signaling message is sen t through the digital p ort circuit pac k 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 p ath illustrated above, and
back to the TN771 where it is chec ked 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 suc h digital por ts, but only one may be
used at a time), two TDM time slots and an id le digital port c onnected to the d ata
module.
Digital Line
Circuit Pack Data
Equipment
Data Module
(MPDM, DA,
MTDM)
G3r PBX
TN771
Maintenance/
Test Circuit
Pack
TDM Bus