Lucent Technologies DDM-2000 OC-3, User & Service Manual

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363-206-285
Administration and Provisioning
8-20 Issue 3 June 2001
Port State Provisioning 8
Port state provisioning is a feature provided on DDM-2000 OC-3 Multiplexers that
suppresses alarm reporting and PM by supporting multiple states (automatic
[AUTO], in-service [IS], and not-monitored [NMON]) for low-speed ports (DS1,
DS3, and EC-1).
Ports without signals (undriven) are in the AUTO state until changed to the IS
state when a signal is present. The
set-state-t1
,
set-state-t3
, and
set-
state-ec1
commands allow a user to change the state of a port to the NMON
state or from the NMON state to the AUTO state. The
rtrv-state-eqpt
,
rtrv-t1
,
rtrv-t3
, and
rtrv-ec1
commands allow a user to retrieve current
port states. The
upd
command allows a user to change the port state of all
undriven ports from IS to AUTO.
Channel State Provisioning 8
Channel state provisioning is a feature provided on DDM-2000 OC-3 Multiplexers
that suppresses reporting of alarms and events for VT1.5 and STS-1 channels
during provisioning by supporting multiple states at the OC-3 and EC-1 ports
(AUTO, IS, and NMON) for these channels. The
rtrv-state-eqpt
,
rtrv-t1
,
rtrv-t3
,
rtrv-ec1
,
set-state-vt1
, and
rtrv-state-vt1
commands
allow a user to retrieve current channel states.
While an end-to-end circuit is being set up, particularly during VT1.5 or STS-1
cross-connection provisioning, transient maintenance signals may result. Without
automatic channel state provisioning, these are reported as alarms or events. The
technicians are expected to ignore these transient alarms and initiate corrective
action only if the alarms persist after the provisioning is completed. To avoid the
confusion created by this, DDM-2000 OC-3 Multiplexers provide automatic
channel state provisioning.
A VT1.5 or STS-1 channel stays in the default AUTO state until a valid signal (a
framed non-AIS or non-LOP signal) is received on that channel. While in AUTO
state, no alarms or events are reported on the channel by the DDM-2000
Multiplexer. On receiving a valid signal, which occurs when the end-to-end circuit
is completely provisioned, the channel automatically changes to the IS state and
normal alarm and event reporting starts. An additional state, NMON, is also
supported in which alarm and event reporting is suppressed regardless of the
validity of the signal being received on the channel. Like the port state
provisioning capability provided for DS1, DS3, and EC-1 ports, the user can use
CIT or TL1 commands to manually change a channel from IS or AUTO to NMON,
and from NMON to AUTO.
A direct change from NMON to IS is not allowed. See the
set-state-sts1
,
set-state-vt1
,
rtrv-state-sts1
,
rtrv-state-vt1
and
upd
commands.