Avaya S8700 Maintenance Manual page 1864

Maintenance-Object Repair Procedures
Modem Pool Conversion Resource Loop-Around
Test (#98)
The Modem Pool Conversion Resource Loop-around test is set up as follows:
TS-A
DIGITAL
PORT
TS-B
MAINTENANCE/
TEST BOARD
(TN771B)
Figure 8-65. Modem Pool Conversion Resource Loop-Around
Test data patterns are transmitted from a Maintenance/Test board's 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's 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's digital port and the Modem
Pool port (time slot A) and verifying that the Maintenance/Test board's digital port
and Modem Pool port go on-hook within the proper time. This test attempts to
allocate a Maintenance/Test board's 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.
8-1142 Issue 1 May 2002
TN758 POOLED MODEM CIRCUIT PACK
DIGITAL ANALOG
PORTION PORTION
MODEM POOL CONVERSION RESOURCE
TS-C
555-233-143