TELNET GPONDoctor 9500, User Manual

Page: 56 / 105

GPONDoctor 9500
User manual
200080279-00 GPON DOCTOR 9500 user manual EN v0 WEB
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
Truncated Burst: When active, if some burst has been truncated is reported by the
engine.
PLOAM and DBRu

PLOAM Count: When active, engine keeps track of the number of messages sent
by/to each ONT, considering:
o
That certain messages have to be retransmitted a fixed number of times
o
That certain messages force the ONT to answer with acknowledgement
messages
o
This is defined in the ITU-G.989.3 and followed by the engine. Any
violation is reported

Unknown PLOAM: When active, all PLOAM messages with a Non-standard
identifier/Non-standard Message-ID/Non-standard message identification value
are reported.

PLOAM CRC: When active, all PLOAM messages with a wrong CRC checksum
are reported.

DBRu CRC: When active, all DRBu messages with wrong CRC checksum are
reported.

750us Margin: According to the ITU-T.989.3, OLT should wait at least 750us
when a GTC-state machine transition occurs (for example from Serial-
Number-O3 to Ranging-O4, when Assign ONT-ID message received), before
sending messages to the ONT that are “relevant” to the new achieved state (e.g.
sending a Range Request message before 750us have passed since Assign ONT-ID
message was sent to ONT). When active, this timing constraint is checked and
reported if violated.

BWMAP CRC: If active, all BWMAPs with wrong CRC are reported.

Unexpected State: When active, if an ONT is in a state different than expected, is
reported by the engine.
OMCI

General OMCI: If not active no error or information is reported on OMCI messages
analysis.

OMCI undefined: If active, engine reports all messages:
o
From/To undefined/non standard OMCI classes
o
Containing undefined/non standard attributes on OMCI entities
o
Undefined OMCI message type

Corrupted OMCI message: If active, malformed OMCI messages are reported, i.e.:
o
OMCI Messages with a size different to 48bytes
o
Malformed OMCI Trailer