Provides Easy
Access to Input and Output Pins via a Plug-in Card.
Test points
and jacks for testing
No voltage
is used to perform facility testing
Durable
design
Extended
length for easy access in card cages or shelves
Easy to
follow options printed on test plug
Switch
selectable configurations for CO and/or field side pins
hardwired loopback input to output passthru tip/ring short
open
Options
Passthru
connects inputs to outputs without regeneration. Both S1 and
S2 must be set to passthru. Note for 239TP: Low signal may not
make it to the next apparatus case.
T/R Short
connects tip and ring for far end continuity tests.
Open, straight
test pins; no connection to other pins.
Loopback
connects four-wire circuit back toward originating direction
without regeneration. Note for 239TP: This is an illegal state
for a unindirectional span (this signal is not regenerated).
