363-206-285 Circuit Order: NTP-036
Issue 2, February 2000 Page 1 of 4
DDM-2000 OC-3 MULTIPLEXER
Discontinue EC-1 Interface
DO ITEMS BELOW IN ORDER LISTED . . . . .FOR DETAILS, GO TO
1.
!
CAUTION:
DDM-2000 circuit packs contain static sensitive components
which can be damaged by electrostatic discharge. A static
ground wrist strap must be worn when handling the circuit
packs. See electrostatic discharge considerations in
Trouble Clearing: TAD-100
.
NOTE:
This procedure assumes that STS1E circuit packs are
installed at one terminating node in the circuit and either
STS1E, DS3,orMXRVO circuit packs are installed at the
other terminating node(s) of the circuit. It further assumes
that the EC-1 interface is being discontinued, not just an
individual DS1. If DS1/DS3 service is being discontinued,
see System Turnup/Circuit Order: IXL-001 for procedures
to discontinue DS1/DS3 service.
At the EC-1 terminating node, determine which EC-1 port is to be
discontinued, verify service has been removed, and verify no
alarms exist on the system.
2.
NOTE:
The following operation may activate the office major or
minor alarm. The audible alarm may be suppressed by
depressing the ACO button.
At the EC-1 cable cross-connect panel at the terminating nodes,
remove the EC-1 signal(s) associated with the port(s) being
discontinued. (FAULT LEDs begin flashing on STS1E circuit pack
with signals removed.)
TAD-100
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