Pdh / Dsn Alarm Monitoring - Nortel Optical Multiservice Edge 6130 Planning Manual

The OME6130 also supports the capability of displaying the network element
summary alarms onto an external device. The Critical, Major, and Minor
alarms can be reported to an external control device by connecting to the
ALM.OUT RJ-45 connector on the front of the OAM circuit pack.
For more information on environmental alarms, refer to Local Craft Access
User Guide, 323-1855-195 and detailed procedures, refer to Trouble Clearing
and Module Replacement Procedures, 323-1855-543.

PDH / DSn alarm monitoring

Alarm monitoring support is limited for framed E1/DS1 ports. The level of
alarm monitoring depends on the PDH/DSn path monitoring mode assigned to
the unframed/framed PDH/DSn ports.
Below are the three provisionable modes of operations:
•
•
•
The path alarm monitoring modes of operation are not applicable to framed
E3/DS3 ports. Each unframed/framed E3/DS3 port has full alarm and
performance monitoring support.
Table 6-10 on page 6-31
circuit packs.
For detailed procedures, refer to Provisioning and Protection Switching
Procedures, 323-1855-310.
Table 6-10
PDH / DSn alarm monitoring
Card type
28xE1/DS1 (see Note1)
3xE3/DS3 (see Note2)
Note 1: The underlined path alarms have limited monitoring support and the non-underlined path
alarms have full monitoring support
Note 2: All line and path alarms have full monitoring support
no monitoring mode (NMM)
Alarm and performance monitoring is disabled for all ports and is the
default mode.
alarm monitoring mode (AMM)
Path alarms are monitored in a round-robin basis. Under normal operating
condition, each port is polled at least 2-3 times in a 2.5 seconds interval.
alarm and performance monitoring (APMM)
Only the nominated framed E1/DS1 port is monitored for path alarms and
performances.
Line alarm
LOS
LOS
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
summarizes the PDH/DSn alarms for the different
Path alarm (near-end)
AIS, LOF, LOM
AIS, LOF, LOM
OAM&P description 6-31
Path alarm (far-end)
RAI
RAI