PM Overhead

In this user interface, you can set path monitoring (PM) overhead bytes and relevant parameters.

Navigation Path

In the NE Explorer, select a board and choose Configuration > OTN > PM Overhead from the Function Tree.

Parameters

Field	Value	Description
Object	Equipment that supports the master and slave shelf management: NE name-shelf ID(shelf name)-slot number-board name-port number(port name)(-monitoring level) Equipment that does not support the master and slave shelf management: NE name-slot number-board name-port number(port name)(-monitoring level) NOTE: For details about the differences between the standard and compatibility modes, see the Impacts of the Standard Mode on the U2000 in Channel Model (OTU, Line or PID Board).	Displays the object that the PM overhead monitors.
Primary,Secondary State	For example: OOS-AU, SGEO	Displays the state of the object.
Enable TIM Response	DISABLE, ENABLE	Sets whether to enable the TIM follow-up response or not. When a TIM alarm is generated at this end, an AIS alarm is inserted to services in the downstream direction. This interrupts the services in the downstream direction.
TIM Mode	SAPI, DAPI, BOTH, OFF	Sets the mode of detecting trail trace identifier mismatch. SAPI: Only the source tag of the TTI is detected. When the source tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported. DAPI: Only the sink tag of the TTI is detected. When the sink tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported. BOTH: Both the source tag and sink tag of the TTI are detected at the same time. When the source tag or sink tag of the TTI to be Received is inconsistent with that of the TTI Received, an alarm is reported. OFF: Neither the source tag or the sink tag is detected. Even if the source tag or sink tag of the TTI to be Received is inconsistent with that of the TTI Received, no alarm is reported.
DEG Threshold	For example: 49424	Sets the DEG threshold when the BIP8 Detection Mode is set as BURST.
DEG Detection Time	1 to 10	Sets the DEG monitoring time when the BIP8 Detection Mode is set as BURST.
BIP8 Detection Mode	BURST, POISSON	Sets the BIP8 error detection mode.
OTN OTUk PM BIP-8 SFBER	1E-3, 1E-4, 1E-5	Sets the performance threshold-crossing threshold when the BIP8 bit errors are detected.
OTN OTUk PM BIP-8 SDBER	1E-5, 1E-6, 1E-7,1E-8, 1E-9	Sets the performance degradation threshold when the BIP8 bit errors are detected. A signal degrade occurs if the signal bit error rate reaches this value.
TTI to Be Sent SAPI	The maximum length is 15 characters.	Sets SAPI string of the trail trace identifier (TTI) to be sent by the port.
TTI to Be Sent DAPI	The maximum length is 15 characters.	Sets DAPI string of the trail trace identifier (TTI) to be sent by the port.
TTI to Be Sent OPER	The maximum length is 32characters.	Sets OPER string of the trail trace identifier (TTI) to be sent by the port.
TTI to Be Received SAPI	The maximum length is 15 characters.	Sets SAPI string of the TTI that should be received by the port.
TTI to Be Received DAPI	The maximum length is 15 characters.	Sets DAPI string of the TTI that should be received by the port.
TTI Recevied SAPI	The maximum length is 15 characters.	Displays SAPI string of the TTI received by the port.
TTI Received DAPI	The maximum length is 15 characters.	Displays SAPI string of the TTI received by the port.
TTI Received OPER	The maximum length is 32 characters.	Displays OPER string of the TTI received by the port.
LCK Insertion	DISABLE, ENABLE	Sets whether to enable the LCK insertion or not. When the function is Enabled, an LCK signal is inserted to the downstream for locking the signal of the user access point. This function is often used by carriers for a test.
Non-Intrusive Monitoring	DISABLE, ENABLE	Sets whether to enable the non-intrusive monitoring or not. The principles for performing the non-intrusive monitoring are as follows: The non-intrusive monitoring is performed on the overhead that is transparently transmitted by an intermediate station. The intermediate station is not the sink end of overhead termination.
AIS Insertion Enabling of PLM	DISABLE, ENABLE	After the AIS Insertion of the PLM is enabled, after the board detects the PLM alarm, the downstream NE of the service can detect an AIS alarm.
AIS Insertion Enabling of MSIM	DISABLE, ENABLE	After the AIS Insertion of the MSIM is enabled, after the board detects the MSIM alarm, the downstream NE of the service can detect an AIS alarm.
AIS Insertion Enabling of VCPLM	DISABLE, ENABLE	After the AIS Insertion of the VCPLM is enabled, after the board detects the VCPLM alarm, the downstream NE of the service can detect an AIS alarm.
STAT	For example: 7	Indicate the STAT byte of PM section, which is an integer ranging from 0 to 255.
OTN ODUK maintenance signals	AIS, OCI, LCK, CANCEL	Set the inserted OTN ODUk maintenance signals.
DEG Detection Time Window (ms)	10, 100, 1000 Default: 1000	Set the interval time slice of DEG.