TTC T-BERD 107A, Справочное руководство

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SECTION 4
4-21
AUXILIARY
FUNCTIONS
Clear FT1 — Sets an office repeater on an
FT1 span to full T1 mode temporarily.
Either the
LOOP UP switch or LOOP
DOWN switch can be used to transmit the
Clear FT1 loop code.
CPE Arm — Selects the CPE arming/
disarming code. A CPE arming code ( LOOP
UP switch) is transmitted on the intelligent
repeater span when testing from the NIU
toward the Central Office (CO) to prepare
the intelligent repeaters to loop up or loop
down upon receipt of the appropriately
addressed loop codes. A disarming code
(
LOOP DOWN switch) loops down all the
intelligent repeaters on the span.
Dual LPBK — Creates a second loopback
of the far-end side of a T1 office repeater
that has been programmed for the NIU
mode and looped up from the DSX-1 side.
The office repeater is placed in dual
loopback mode with a loopback toward the
CO (DSX-1) and a loopback toward the
Customer Premises. Pressing the
LOOP
UP switch transmits the Dual Loopback
code. Pressing the LOOP DOWN switch
transmits the loop-down code that loops
down the office repeater.
Far-End NIU Activate — Unblocks an
already armed near-end T1 office repeater
to allow the appropriate NIU loop code to
pass through. Pressing the
LOOP UP or
LOOP DOWN switch transmits the un-
block code, which allows standard NIU
loop up and loop down codes to pass through
the office repeater to loop the far-end NIU.