DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1090MODEM-PT (Modem Pool Port)
9
Modem Pool Conversion Resource Loop-Around
Test (#98)
The Modem Pool Conversion Resource Looparound Test is set up as follows:
Figure 9-64. Modem Pool Conversion Resource Loop-Around
Test data patterns are transmitted from a Maintenance/Test Board digital port
over network time slot A through the digital port on the conversion resource,
looped around through the analog port via time slot C back to the
Maintenance/Test Board digital port circuit via time slot B where the patterns are
checked for accuracy. Finally, the test forces a disconnect by breaking the
connection between the Maintenance/Test Board digital port and the Modem
Pool Port (time slot A) and verifying that the Maintenance/Test Board digital port
and Modem Pool Port go on-hook within the proper time.This test attempts to
allocate a Maintenance/Test Board digital port, Modem Pool Port, and other
internal resources. If any of these allocation attempts fail, the test cannot be
completed and a specific abort error is reported.
TS-A
TS-C
ANALOG
PORTION
DIGITAL
PORTION
MAINTENANCE/
TEST BOARD
(TN771B)
DIGITAL
PORT
MODEM POOL CONVERSION RESOURCE
TN758 POOLED MODEM CIRCUIT PACK
TS-B
